1
|
Crockett MP, Piña J, Gogoi AR, Lalisse RF, Nguyen AV, Gutierrez O, Thomas AA. Breaking the tert-Butyllithium Contact Ion Pair: A Gateway to Alternate Selectivity in Lithiation Reactions. J Am Chem Soc 2023; 145:10743-10755. [PMID: 37133911 PMCID: PMC10245630 DOI: 10.1021/jacs.2c13047] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The effects of Lewis basic phosphoramides on the aggregate structure of t-BuLi have been investigated in detail by NMR and DFT methods. It was determined that hexamethylphosphoramide (HMPA) can shift the equilibrium of t-BuLi to include the triple ion pair (t-Bu-Li-t-Bu)-/HMPA4Li+ which serves as a reservoir for the highly reactive separated ion pair t-Bu-/HMPA4Li+. Because the Li-atom's valences are saturated in this ion pair, the Lewis acidity is significantly decreased; in turn, the basicity is maximized which allowed for the typical directing effects within oxygen heterocycles to be overridden and for remote sp3 C-H bonds to be deprotonated. Furthermore, these newly accessed lithium aggregation states were leveraged to develop a simple γ-lithiation and capture protocol of chromane heterocycles with a variety of alkyl halide electrophiles in good yields.
Collapse
Affiliation(s)
- Michael P Crockett
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Jeanette Piña
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Achyut Ranjan Gogoi
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Remy F Lalisse
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Andrew V Nguyen
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Osvaldo Gutierrez
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Andy A Thomas
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| |
Collapse
|
2
|
Synthesis and biological evaluation of substituted amide derivatives of C4-ageratochromene dimer analog. Bioorg Med Chem Lett 2021; 50:128340. [PMID: 34469711 DOI: 10.1016/j.bmcl.2021.128340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/19/2021] [Accepted: 08/21/2021] [Indexed: 12/22/2022]
Abstract
Substituted amide derivatives of C4-ageratochromene dimer analog (19) were synthesized through structural modification of precocene-I (4a), isolated from the essential oil of Ageratum conyzoides L. The target compounds (18-20, 23I-VI, 24I-VI, and 25I-VI) were evaluated for their bone-forming effect using osteoblast differentiation assay. Seven compounds (23I, 23II, 23IV, 23VI, 24III, 24VI, and 25VI) presented good activity within 1 pM-1 nM concentration. At 1 pM concentration, the most active compound i.e. 23II showed effective mineralization of osteoblast cells along with expression of osteogenic marker genes viz RUNX 2, BMP-2, and type 1 collagen (Type-1 col) without any toxicity towards osteoblast cells. Single crystal X-ray analysis of 18 and 20 revealed that the core nucleus of these molecules bear phenyl rings in a Trans-stilbenoid system and had a good structural correlation with 17β-estradiol (1) and diethylstilbestrol (DES, 3). In-silico study about 23II showed its structural complementarities with the LBD of estrogen receptor (ER) which indicated possible ER-mediated activity of compounds.
Collapse
|
3
|
Luo WF, Ye LW, Li L, Qian PC. Regio- and diastereoselective synthesis of trans-3,4-diaryldihydrocoumarins via metal-free [4+2] annulation of ynamides with o-hydroxybenzyl alcohols. Chem Commun (Camb) 2021; 57:5032-5035. [PMID: 33881063 DOI: 10.1039/d1cc00687h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient regio- and diastereoselective method for the construction of valuable trans-3,4-diaryldihydrocoumarins via metal-free [4+2] annulation of ynamides with o-hydroxybenzyl alcohols has been developed. Ynamides are first treated as 2-π partners to react with o-hydroxybenzyl alcohols via traceless sulfonamide directing groups, affording trans-3,4-diaryldihydrocoumarins in good yields with high regio- and diastereoselectivities. This metal-free methodology is also characterized by a wide substrate scope, good functional group tolerance, and efficiency on a gram scale.
Collapse
Affiliation(s)
- Wen-Feng Luo
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | | | | | | |
Collapse
|
4
|
Ranade AA, Joseph AR, Kumbhar VB, Paradkar MV. A Facile Synthesis of Dihydronaphthopyrans. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823403103174821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Efficient syntheses of naturally occurring linear dihydronaphthopyran (6a) and its angular analogues (3b and 4), from appropriate ortho-methoxynaphthaldehydes, have been described.
Collapse
Affiliation(s)
- Anup A. Ranade
- Department of Chemistry, Post-Graduate & Research Centre, A. G. College, Karve Road, Pune 411 004, Maharashtra, India
| | - Augustine R. Joseph
- Department of Chemistry, Post-Graduate & Research Centre, A. G. College, Karve Road, Pune 411 004, Maharashtra, India
| | - Virendra B. Kumbhar
- Department of Chemistry, Post-Graduate & Research Centre, A. G. College, Karve Road, Pune 411 004, Maharashtra, India
| | - Madhusudan V. Paradkar
- Department of Chemistry, Post-Graduate & Research Centre, A. G. College, Karve Road, Pune 411 004, Maharashtra, India
| |
Collapse
|
5
|
Panda G, Kumar M SL. Versatile Synthesis of 4‐Aryl Chroman and 1‐Aryl Tetralins Through Metal‐Free Reductive Arylations. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gautam Panda
- Academy of Scientific and Innovative Research 110001 New Delhi India
- BS 10/1, Sector 10 Jankipuram extension CSIR‐Central Drug Research Institute Sitapur Road 226031 Lucknow India
| | - Srinivas Lavanya Kumar M
- BS 10/1, Sector 10 Jankipuram extension CSIR‐Central Drug Research Institute Sitapur Road 226031 Lucknow India
| |
Collapse
|
6
|
Spanka M, Schneider C. Phosphoric Acid Catalyzed Aldehyde Addition to in Situ Generated o-Quinone Methides: An Enantio- and Diastereoselective Entry toward cis-3,4-Diaryl Dihydrocoumarins. Org Lett 2018; 20:4769-4772. [DOI: 10.1021/acs.orglett.8b01865] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Matthias Spanka
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Deutschland
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Deutschland
| |
Collapse
|
7
|
Ahmad MI, Dixit S, Konwar R, Vasdev PG, Yadav AK, Tripathi S, Gupta MM, Sharma A, Gupta A. Syntheses of conformationally restricted benzopyran based triarylethylenes as growth inhibitors of carcinoma cells. Bioorg Med Chem Lett 2017; 27:5040-5045. [DOI: 10.1016/j.bmcl.2017.09.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 09/02/2017] [Accepted: 09/29/2017] [Indexed: 01/13/2023]
|
8
|
Chen X, Song R, Liu Y, Ooi CY, Jin Z, Zhu T, Wang H, Hao L, Chi YR. Carbene and Acid Cooperative Catalytic Reactions of Aldehydes and o-Hydroxybenzhydryl Amines for Highly Enantioselective Access to Dihydrocoumarins. Org Lett 2017; 19:5892-5895. [DOI: 10.1021/acs.orglett.7b02883] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xingkuan Chen
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Runjiang Song
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yingguo Liu
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Chong Yih Ooi
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Zhichao Jin
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, People’s Republic of China
| | - Tingshun Zhu
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Hongling Wang
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, People’s Republic of China
| | - Lin Hao
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yonggui Robin Chi
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
- Laboratory
Breeding Base of Green Pesticide and Agricultural Bioengineering,
Key Laboratory of Green Pesticide and Agricultural Bioengineering,
Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, People’s Republic of China
| |
Collapse
|
9
|
Gupta A, Ahmad I, Kureel J, John AA, Sultan E, Chanda D, Agarwal NK, Alauddin, Wahajuddin, Prabhaker S, Verma A, Singh D. Differentiation of skeletal osteogenic progenitor cells to osteoblasts with 3,4-diarylbenzopyran based amide derivatives: Novel osteogenic agents. Eur J Med Chem 2016; 121:82-99. [DOI: 10.1016/j.ejmech.2016.05.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 04/08/2016] [Accepted: 05/07/2016] [Indexed: 01/24/2023]
|
10
|
Kriplani A, Srivastava A, Kulshrestha V, Kachhawa G, Agarwal N, Bhatla N, Hari S. Efficacy of ormeloxifene versus oral contraceptive in the management of abnormal uterine bleeding due to uterine leiomyoma. J Obstet Gynaecol Res 2016; 42:1744-1752. [PMID: 27647770 DOI: 10.1111/jog.13105] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/09/2016] [Accepted: 06/19/2016] [Indexed: 11/30/2022]
Abstract
AIM To compare ormeloxifene with combined oral contraceptive (COC) in abnormal uterine bleeding (AUB) due to leiomyoma (AUB-L). METHODS Fifty women with AUB-L were randomized after informed consent and institute ethics clearance. Group I (n = 25) was given ormeloxifene (a SERM i.e. selective estrogen receptor modulator) 60 mg twice per week and group II (n = 25) was given COC (ethinyl estradiol 30 μg with desogestrel 150 μg) on days 1-21 for 6 months. Menstrual blood loss was assessed on pictorial blood loss assessment chart (PBAC) score and leiomyoma volume was assessed on ultrasound. Fibroids were classified according to FIGO-PALM-COEIN classification for AUB where leiomyomas were further sub-classified as types 0 to 8 according to their location. Follow up was done at 1, 3, 6 and 9 months. RESULTS Mean PBAC score reduced by 81% with ormeloxifene (group I) compared with 43.8% for COC (group II). After 6 months, 18 patients (72%) in group I had PBAC score in the non-menorrhagic range (<100) compared with only two (8%) in group II. In group I, PBAC score in FIGO-PALM-COEIN leiomyoma types 2, 3, 4, 5, 6 reduced by 90.2%, 82.5%, 93.3%, 56.4% and 100%, respectively and 14 (56%) developed amenorrhea; compared with reduction of 64%, 27.5%, 25.9% in types 4, 5 and 6, respectively in group II. Dysmenorrhea visual analog scale score decreased in both groups. Mean leiomyoma volume increased in both groups: by 25.7% with ormeloxifene versus 16.9% with COC; only grade 2 leiomyoma in group I reduced by 44%. One patient in group II with grade 2 leiomyoma discontinued treatment at 3 months. Seven patients (28%) developed ovarian cyst in group I with no other major adverse effect in either group. CONCLUSION Ormeloxifene with its convenient twice-weekly dosage schedule was effective in treating AUB-L, with 72% of patients responding to 6-month treatment compared with 8% with COC, even though leiomyoma volume increased insignificantly with both ormeloxifene and COCs.
Collapse
Affiliation(s)
- Alka Kriplani
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India
| | - Astha Srivastava
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India
| | - Vidushi Kulshrestha
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India
| | - Garima Kachhawa
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India
| | - Nutan Agarwal
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India
| | - Neerja Bhatla
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India
| | - Smriti Hari
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
11
|
Microwave assisted synthesis, biological evaluation, and molecular docking of novel chroman scaffolds incorporating spirochromanone framework. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1699-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
12
|
Ashok D, Kumar RS, Gandhi DM, Jayashree A. Solvent-free microwave-assisted synthesis and biological evaluation of aurones and flavanones based on 2,2-dimethylchroman-4-one. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1917-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
13
|
Dongamanti A, Devulapally MG, Aamate VK, Gundu S. Microwave-assisted synthesis and antimicrobial evaluation of novel pyrazolines. Chem Heterocycl Compd (N Y) 2015. [DOI: 10.1007/s10593-015-1790-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
14
|
Naik MM, Kamat DP, Tilve SG, Kamat VP. Molecular iodine catalyst promoted synthesis of chromans and 4-aryl-3,4-dihydrobenzopyran-2-ones via [3+3] cyclocoupling. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.093] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Gara RK, Sundram V, Chauhan SC, Jaggi M. Anti-cancer potential of a novel SERM ormeloxifene. Curr Med Chem 2014; 20:4177-84. [PMID: 23895678 DOI: 10.2174/09298673113209990197] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 01/21/2013] [Accepted: 03/20/2013] [Indexed: 12/17/2022]
Abstract
Ormeloxifene is a non-steroidal Selective Estrogen Receptor Modulator (SERM) that is used as an oral contraceptive. Recent studies have shown its potent anti-cancer activities in breast, head and neck, and chronic myeloid leukemia cells. Several in vivo and clinical studies have reported that ormeloxifene possesses an excellent therapeutic index and has been well-tolerated, without any haematological, biochemical or histopathological toxicity, even with chronic administration. A reasonably long period of time and an enormous financial commitment are required to develop a lead compound into a clinically approved anti-cancer drug. For these reasons and to circumvent these obstacles, ormeloxifene is a promising candidate on a fast track for the development or repurposing established drugs as anti-cancer agents for cancer treatment. The current review summarizes recent findings on ormeloxifene as an anti-cancer agent and future prospects of this clinically safe pharmacophore.
Collapse
|
16
|
Microwave-assisted synthesis of novel 1,2,3-triazole derivatives and their antimicrobial activity. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0880-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
17
|
Sangita, Dwivedi A, Prathipati P, Ray S. Effect of side-chain alteration on hormonal activity of nonsteroidal estrogen antagonists. Med Chem Res 2009. [DOI: 10.1007/s00044-009-9238-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
18
|
Kriplani A, Kulshrestha V, Agarwal N. Efficacy and safety of ormeloxifene in management of menorrhagia: A pilot study. J Obstet Gynaecol Res 2009; 35:746-52. [DOI: 10.1111/j.1447-0756.2008.00987.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Pruitt VL, Berlin KD, Hirsch KS. SYNTHESIS OF SOME 3,4-DIHYDRO-2H-1-BENZOTHIOPYRAN-4-OLS. ORG PREP PROCED INT 2009. [DOI: 10.1080/00304949009458200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
20
|
Gupta A, Mandal SK, Leblanc V, Descôteaux C, Asselin É, Bérubé G. Synthesis and cytotoxic activity of benzopyran-based platinum(II) complexes. Bioorg Med Chem Lett 2008; 18:3982-7. [DOI: 10.1016/j.bmcl.2008.06.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2008] [Revised: 06/03/2008] [Accepted: 06/04/2008] [Indexed: 11/29/2022]
|
21
|
Büyükkıdan B, Bilgiç S, Bilgiç O. THE SYNTHESIS OF SOME CHROMANS VIA o-QUINONE-METHIDE INTERMEDIATES. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-100104015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- B. Büyükkıdan
- a Department of Chemistry, Faculty of Arts and Science , University of Osmangazi , Eskişehir, 26480, Türkey
| | - S. Bilgiç
- a Department of Chemistry, Faculty of Arts and Science , University of Osmangazi , Eskişehir, 26480, Türkey
| | - O. Bilgiç
- a Department of Chemistry, Faculty of Arts and Science , University of Osmangazi , Eskişehir, 26480, Türkey
| |
Collapse
|
22
|
Kumar V, Lal J, Singh MM, Gupta RC. Effect of concurrently coadministered drugs on the pharmacokinetic/pharmacodynamic profile of centchroman, a nonsteroidal oral contraceptive, in rats. Contraception 2006; 74:165-73. [PMID: 16860055 DOI: 10.1016/j.contraception.2006.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2005] [Revised: 02/16/2006] [Accepted: 02/16/2006] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Centchroman (international nonproprietary name: ormeloxifene) is a nonsteroidal selective estrogen receptor modulator, oral contraceptive, anticancer and antiosteoporotic agent that is intended for long-term use by women. In view of the vast clinical applications and interactions of steroidal oral contraceptives with commonly used therapeutic agents, the interaction potential of certain concomitantly administered therapeutic agents was investigated in terms of postcoital contraceptive efficacy (pharmacological) and the pharmacokinetic profile of centchroman in female Sprague-Dawley rats. The coadministered drugs used in the study were ciprofloxacin, cefixime, amoxicillin, metronidazole, amlodipine, atenolol, theophylline, metformin, pioglitazone and glibenclamide. MATERIALS AND METHODS The pharmacological activity of centchroman was evaluated in sperm-positive female rats at 1.5 mg/kg, with or without coadministered drugs. Rats were sacrificed on Day 10 postcoitus, and autopsy was performed to check for the presence or absence of implantations. The estrogenic and antiestrogenic activities of centchroman were evaluated in immature ovariectomized rats. Pharmacokinetic interaction was studied in normal female rats with or without coadministered drugs. Serum samples were taken over 120 h and analyzed using a validated high-performance liquid chromatography method to generate the pharmacokinetic profile of centchroman. Pharmacokinetic parameters were estimated using noncompartmental analysis, and the results were compared. RESULTS In pharmacological interaction studies, centchroman alone showed a 100% success rate when given alone or in the presence of coadministered drugs. The only exception was amoxicillin coadministration, with 66% rats in the group showing resorbed implantations. Further investigation with amoxicillin in ovariectomized immature rats indicates no alteration in the estrogenic and antiestrogenic profiles of centchroman. In pharmacokinetic interaction studies, most of the therapeutic agents affected the rate and extent of absorption of centchroman. In other pharmacokinetic parameters, clearance (CL) remained unchanged; however, there was decrease in bioavailability (F) and volume of distribution (V(d)) in some situations. CONCLUSIONS The results indicate that there is no direct link between the altered pharmacokinetics of centchroman and the failure of pharmacological effect. The pharmacological interaction with amoxicillin could not be explained on the basis of alteration in the estrogenic and antiestrogenic activities of centchroman, indicating that different mechanisms are involved. The findings, however, suggest that amoxicillin coadministration may result in pharmacological interaction with centchroman and that caution should be taken in clinical practice.
Collapse
Affiliation(s)
- Vipul Kumar
- Pharmacokinetics and Metabolism Division, Central Drug Research Institute, PO Box 173, Lucknow 226001, India
| | | | | | | |
Collapse
|
23
|
Kole PL, Ray S. Synthesis of trans-2,2-Dimethyl-3-phenyl-4-(p-β-pyrrolidinoethoxy)phenyl-7-methoxy-[2-14C]chroman. J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.2580160220] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
24
|
Ray S, Rastogi R, Kumar A. Current status of estrogen receptors. PROGRESS IN DRUG RESEARCH. FORTSCHRITTE DER ARZNEIMITTELFORSCHUNG. PROGRES DES RECHERCHES PHARMACEUTIQUES 2003; 59:201-32. [PMID: 12458968 DOI: 10.1007/978-3-0348-8171-5_7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Increasing knowledge on structure and function of estrogen receptors is providing information on the mechanism of action of estrogen agonists, as well as antagonists, and in understanding their tissue-selective action. However, there are still many factors associated with estrogen response which are poorly understood. Therefore, the task of designing a tissue-selective estrogen for use as a pharmaceutical in estrogen-dependent disorders remains an uncertain game. This review provides information on the current status of estrogen receptors for a better understanding.
Collapse
Affiliation(s)
- Suprabhat Ray
- Medicinal Chemistry Division, Central Drug Research Institute, Lucknow 226001, India.
| | | | | |
Collapse
|
25
|
Khurana M, Lal J, Singh MM, Paliwal JK, Kamboj VP, Gupta RC. Evaluation of interaction potential of certain concurrently administered drugs with pharmacological and pharmacokinetic profile of centchroman in rats. Contraception 2002; 66:47-56. [PMID: 12169381 DOI: 10.1016/s0010-7824(02)00318-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Centchroman (Ormeloxifene) is a nonsteroidal, selective estrogen receptor modulator, oral contraceptive and anticancer agent, and is intended for long-term use by women. In view of its vast clinical application and the interaction of steroidal oral contraceptives with certain commonly used therapeutic agents, evaluation of interaction of certain concomitantly administered therapeutic agents (ibuprofen, rifampicin, diazepam, salbutamol, nifedipine, paracetamol, haloperidol, and tetracycline), in terms of both the postcoital contraceptive efficacy and pharmacokinetic profile, with centchroman was undertaken in female Sprague-Dawley rats. Among the representatives from each commonly used therapeutic category, interaction (pharmacokinetic) was observed with ibuprofen (60 mg/kg, twice daily), haloperidol (0.7 mg/kg, twice daily), and tetracycline (140 mg/kg, twice daily) coadministration on Days 1 through 5 postcoitum. Of these three therapeutic agents, only tetracycline interfered with the contraceptive efficacy of centchroman. It reduced the bioavailability of centchroman and its active metabolite by increasing their excretion through bile and feces. Increased metabolite excretion on tetracycline coadministration indicates the enterohepatic recirculation of the metabolite, not the parent drug. However, the effect of tetracycline was negated by the inclusion of lactic acid bacillus spores in the regimen.
Collapse
Affiliation(s)
- M Khurana
- Pharmacokinetics and Metabolism Division, Central Drug Research Institute, Lucknow 226001, India
| | | | | | | | | | | |
Collapse
|
26
|
Bury PS, Christiansen LB, Jacobsen P, Jørgensen AS, Kanstrup A, Naerum L, Bain S, Fledelius C, Gissel B, Hansen BS, Korsgaard N, Thorpe SM, Wassermann K. Synthesis and pharmacological evaluation of novel cis-3,4-diaryl-hydroxychromanes as high affinity partial agonists for the estrogen receptor. Bioorg Med Chem 2002; 10:125-45. [PMID: 11738615 DOI: 10.1016/s0968-0896(01)00257-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The syntheses and in vitro pharmacological evaluation of a number of cis-3,4-diaryl-hydroxy-chromanes are reported, along with the results of a thorough in vivo profiling of the tissue-selective estrogen partial-agonist NNC 45-0781 [3, (-)-(3S,4R)-7-hydroxy-3-phenyl-4-(4-(2-pyrrolidinoethoxy)phenyl)chromane]. These studies showed that NNC 45-0781 is a very promising candidate for the prevention of post-menopausal osteoporosis, and the treatment of other health issues related to the loss of endogenous estrogen production.
Collapse
Affiliation(s)
- Paul S Bury
- Novo Nordisk A/S, Novo Nordisk Park, DK-2760, Måløv, Denmark.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Ghosh R, Kamboj VP, Singh MM. Interaction with anti-implantation and estrogen antagonistic activities of dl-ormeloxifene, a selective estrogen receptor modulator, by tetracycline in female Sprague-Dawley rats. Contraception 2001; 64:261-9. [PMID: 11747877 DOI: 10.1016/s0010-7824(01)00257-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Among the 10 commonly used therapeutic agents investigated, concurrent oral administration of tetracycline (140 mg/kg) twice daily on Days 1-5 post-coitum (pc) interfered with the post-coital anti-implantation activity and almost completely abolished estrogen antagonistic activity of the single anti-implantation (1.5 mg/kg, orally) dose of dl-ormeloxifene administered on Day 1 pc, resulting in the occurrence of resorbed implantations in 50% of the females. However, no such interaction was evident when tetracycline was administered intramuscularly or when ormeloxifene was administered at twice its anti-implantation dose. There was no effect of ormeloxifene and/or tetracycline treatment on serum estradiol and progesterone levels, and all animals presented apparently normal corpora lutea. Ormeloxifene administered per se inhibited aminopyrine-N-demethylase (AD), glucose-6-phosphate dehydrogenase (G-6-PDH) and glutathione-S-transferase (GST) in the liver on the day of maximal endometrial receptivity, which was prevented by tetracycline co-administration. Aniline hydroxylase and AD were not detected in small intestine or uterus in vehicle control or any of the treatment groups. There was, however, no effect of ormeloxifene plus tetracycline treatment on serum total alkaline phosphatase activity. Findings suggest that interference with anti-implantation action of ormeloxifene by tetracycline might be due primarily to the almost complete abolition of its estrogen antagonistic activity at the uterine level, effected by decreased bioavailability of ormeloxifene and/or its active metabolite(s) by altered enterohepatic recirculation because of the effect on gut microflora. This might alternatively be related to an increased rate of its metabolism and elimination from the system via prevention of ormeloxifene-induced inhibition of hepatic AD, G-6-PDH, and GST, which, by effecting a decreased rate of metabolism, might be responsible for prolonged (approximately 120 h) duration of estrogen antagonistic/anti-implantation action of ormeloxifene in this species.
Collapse
Affiliation(s)
- R Ghosh
- Division of Endocrinology, Central Drug Research Institute, Lucknow-226 001, India.
| | | | | |
Collapse
|
28
|
Singh MM. Centchroman, a selective estrogen receptor modulator, as a contraceptive and for the management of hormone-related clinical disorders. Med Res Rev 2001; 21:302-47. [PMID: 11410933 DOI: 10.1002/med.1011] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
DL-Centchroman (67/20; INN: Ormeloxifene) synthesized at the Central Drug Research Institute, Lucknow, is a nonsteroidal once-a-week oral contraceptive. It was introduced in Delhi in July, 1991, marketed in India in 1992 as Saheli and Choice-7 (Hindustan Latex Ltd., Thiruvananthapuram) and Centron (Torrent Pharmaceuticals India Ltd., Ahmedabad), and included in the National Family Welfare Programme in 1995.5 According to post-marketing surveillance, approximately 100,000 women were using this pill and approximately 1100,000 menstrual cycles were covered until 1996. It is a unique need-oriented contraceptive being effective when taken immediately after coitus or routinely as a weekly pill and has the advantage of less frequent administration. Its contraceptive action is quickly reversible. It has long terminal serum halflife of 168 hr in women and exhibits duration of anti-implantation/estrogen antagonistic action of 120 hr, despite a short (24.1 hr) serum halflife, in the rat. In lactating women, it is excreted in milk in quantities considered unlikely to cause any deleterious effect on suckling babies. In phase II and III multicentric trials as a contraceptive, children born of method-and-user failure pregnancies showed normal milestones, without any congenital anomaly. Reports of its promising action in the management of certain hormone-related clinical disorders are available. It has an excellent therapeutic index and is considered safe for chronic administration.
Collapse
Affiliation(s)
- M M Singh
- Division of Endocrinology, Central Drug Research Institute, Lucknow-226 001, India
| |
Collapse
|
29
|
Howell A. Tamoxifen versus the newer SERMs: what is the evidence? Ann Oncol 2001; 11 Suppl 3:255-65. [PMID: 11079150 DOI: 10.1093/annonc/11.suppl_3.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Howell
- CRC Department of Medical Oncology, University of Manchester, Christie Hospital, UK
| |
Collapse
|
30
|
Tripathi S, Dwivedy I, Dhar J, Dwivedy A, Ray S. Evaluation of piperidinoethoxy moiety as an antiestrogenic substituent in non-steroidal anti-estrogens: Fertility regulation. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)00379-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
31
|
Agnihotri A, Srivastava AK, Kamboj VP. Characterization of centchroman binding protein in plasma of rhesus monkey (Macaca mulatta). J Med Primatol 1996; 25:53-6. [PMID: 8740953 DOI: 10.1111/j.1600-0684.1996.tb00193.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Centchroman, a nonsteroidal antifertility agent was studied for its binding to monkey (Macaca mulatta) plasma proteins using charcoal adsorption and electrophoretic techniques. 14C-centchroman showed a low affinity binding and did not compete for 3H-cortisol or 3H-DHT binding sites in plasma. 14C-centchroman binding protein was heat stable in nature and showed the electrophoretic pattern similar to that of albumin (Rf 0.70). Thus centchroman binds to albumin in monkey plasma which can be suggested as carrier protein for this contraceptive agent.
Collapse
Affiliation(s)
- A Agnihotri
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | | | | |
Collapse
|
32
|
Dwivedi A, Sirkar K, Bhatt G, Seth R, Singh S, Sarin J. Determination of cis- and trans-centchroman in its dosage forms by high-performance liquid chromatography. J Chromatogr A 1994. [DOI: 10.1016/0021-9673(94)85244-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
33
|
Paliwal JK, Gupta RC, Grover PK, Asthana OP, Srivastava JS, NityaNand S. High performance liquid chromatographic (HPLC) determination of centchroman in human serum and application to single-dose pharmacokinetics. Pharm Res 1989; 6:1048-51. [PMID: 2622859 DOI: 10.1023/a:1015930504868] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A simple and sensitive (2 ng/ml) HPLC method with fluorescence detection has been developed to measure serum concentrations of centchroman, a new nonsteroidal antifertility agent. The method was sufficiently sensitive to follow the drug over 21 days in human volunteers. Pharmacokinetic parameters of centchroman were determined after a single oral dose of 60 mg (2 x 30-mg tablets) in two healthy female volunteers. Centchroman is slowly eliminated from serum, showing a biexponential disappearance curve from serum. The terminal half-life of centchroman in the two volunteers was 168 and 175 hr, respectively.
Collapse
Affiliation(s)
- J K Paliwal
- Pharmacokinetics and Metabolism Division, Central Drug Research Institute, Lucknow, India
| | | | | | | | | | | |
Collapse
|
34
|
Malik MS, Rastogi SN, Singh M, Sreenivasulu S, Agnihotri A, Kalra V, Kaboj V. Anti-fertility agents 45. Synthesis and activity of 1,2-cis-1-(p-(β-pyrrolidinoethoxy)phenyl)-2-phenyl-5-methoxyindane. Eur J Med Chem 1989. [DOI: 10.1016/0223-5234(89)90115-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
35
|
Ratna S, Roy SK, Ray S, Kole PL, Salman M, Madhusudan KP, Sircar KP, Anand N. Centchroman: In vitro metabolism by rat liver homogenate. Drug Dev Res 1986. [DOI: 10.1002/ddr.430070208] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
36
|
Singh H, Chawla AS, Kapoor VK. Medicinal chemistry research in India. PROGRESS IN MEDICINAL CHEMISTRY 1985; 22:243-66. [PMID: 2873624 DOI: 10.1016/s0079-6468(08)70232-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
37
|
Saeed A, Durani N, Durani S, Ray S, Kapil RS. Cis isomer of centchroman--a selective ligand for the microsomal antiestrogen binding site. Biochem Biophys Res Commun 1984; 125:346-52. [PMID: 6508803 DOI: 10.1016/s0006-291x(84)80374-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Several compounds structurally related to the triarylethylene antiestrogens, but possessing weak estrogen receptor affinities, were assessed for their ability to interact with the microsomal antiestrogen binding site. While all the compounds tested did interact with this site their relative affinities were somewhat lower than that of tamoxifen. One of these, viz., the cis isomer of centchroman, has however emerged as a selective ligand for the antiestrogen binding site since its estrogen receptor affinity is nearly 50,000 times lower on a relative scale.
Collapse
|
38
|
Durani S, Agarwal AK, Saxena R, Setty BS, Gupta RC, Kole PL, Ray S, Anand N. Seco-oestradiols and some non-steroidal oestrogens: structural correlates of oestrogenic action. JOURNAL OF STEROID BIOCHEMISTRY 1979; 11:67-77. [PMID: 491606 DOI: 10.1016/0022-4731(79)90278-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|