1
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Affiliation(s)
- P. Barbetti
- a Istituto di Chimica Farmaceutica e Tecnica Farmaceutica Università di Perugia , Via del Liceo 1, 06123, Perugia, ITALY
| | - I. Chiappini
- a Istituto di Chimica Farmaceutica e Tecnica Farmaceutica Università di Perugia , Via del Liceo 1, 06123, Perugia, ITALY
| | - G. Fardella
- a Istituto di Chimica Farmaceutica e Tecnica Farmaceutica Università di Perugia , Via del Liceo 1, 06123, Perugia, ITALY
| | - G. Grandolini
- a Istituto di Chimica Farmaceutica e Tecnica Farmaceutica Università di Perugia , Via del Liceo 1, 06123, Perugia, ITALY
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2
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Ambrogi V, Fardella G, Grandolini G, Perioli L. Intercalation compounds of hydrotalcite-like anionic clays with antiinflammatory agents — I. Intercalation and in vitro release of ibuprofen. Int J Pharm 2001; 220:23-32. [PMID: 11376964 DOI: 10.1016/s0378-5173(01)00629-9] [Citation(s) in RCA: 289] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Hydrotalcite-like compounds are layered solids having positively charged layers and interlayer charge-compensating anions. The synthetic Mg0.67Al0.33(OH)2 Cl0.33.0.6H2O, which is biocompatible, has been used to intercalate a model drug, ibuprofen, in order to prepare a modified release formulation. The intercalation compound was prepared via ion-exchange starting from the chloride form of hydrotalcite and its composition, determined both by elemental microanalysis and thermogravimetric analysis, was Mg0.67Al0.33(OH)2IBU0.33.0.47H2O, drug content 50% (w/w). As a consequence of the intercalation, the interlayer distance of the host increased from 0.78 nm (interlayer distance of chloride form) to 2.17 nm. The result of dissolution tests at pH 7.5 showed that the in vitro drug release was modified if compared with that obtained with comparative formulations. The mechanism of modified drug release has been interpreted on the basis of the ion exchange process of the ibuprofen anion intercalated in the lamellar host and phosphates contained in the intestinal fluid buffer.
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Affiliation(s)
- V Ambrogi
- Dipartimento di Chimica e Tecnologia del Farmaco, University of Perugia, 06123, Perugia, Italy
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3
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Bernardini C, Ambrogi V, Fardella G, Perioli L, Grandolini G. How to improve the readability of the patient package leaflet: a survey on the use of colour, print size and layout. Pharmacol Res 2001; 43:437-44. [PMID: 11394935 DOI: 10.1006/phrs.2001.0798] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This paper displays the results of the second part of a survey about patient information and the use of the patient package leaflet. The aim of this research is to investigate the consumers' attitude towards written information. As the formal aspects of the written message are very important in communication, we prepared a questionnaire in order to evaluate the attitude of patients towards some typographical modifications. Patients were invited to give indications about which colours could be used in the different paragraphs of the package leaflet and which print size could be easily read. All people interviewed were asked to choose a colour, from six proposed by us, to be used for 'therapeutic indications', 'side effects', 'how to use', 'paediatric use', 'contraindications', 'use in pregnancy' and 'warnings'. Clear suggestions for the choice of colours for therapeutic indications, side effects and contraindications arose from the survey. In the other cases there was no uniformity of answers. All people complained that the print size used in the package leaflet is too small and suggested 10 and 11 points Didot. Finally, from the survey it emerged that people would appreciate a more detailed package leaflet but information should be given in a schematic and concise way.
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Affiliation(s)
- C Bernardini
- Dipartimento di Chimica e Tecnologia del Farmaco, University of Perugia via del Liceo, 1 06123 Perugia, Italy
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4
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Abstract
A microporous material obtained from kanemite, a layered polysilicate, was studied in order to investigate its feasibility of including drugs and then releasing them. Diphenydramine hydrochloride was chosen as a model drug. The preparation of the microporous material and its loading with the drug are described. As kanemite is able to intercalate anions between its layers, the intercalation compound of diphenydramine and kanemite was also prepared. Both the drug-loaded microporous material and the intercalation compound were submitted to dissolution tests at pH 7.5. The drug release profiles from these two different materials and from a physical mixture were compared.
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Affiliation(s)
- V Ambrogi
- Dipartimento di Chimica e Tecnologia del Farmaco, Università degli Studi di Perugia, Italy
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5
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Grandolini G. Synthesis of some new 1,4-benzothiazine and 1,5-benzothiazepine tricyclic derivatives with structural analogy with TIBO and their screening for anti-HIV activity. Eur J Med Chem 1999. [DOI: 10.1016/s0223-5234(99)00223-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Grandolini G, Ambrogi V, Perioli L, Giannangeli M, Jovicevic L, Rossi V. Synthesis and antimicrobial activity of some new derivatives of 6,12-dihydroindolo[2,1-b]quinazolin-6,12-dione. Farmaco 1997; 52:679-83. [PMID: 9550094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Some derivatives of tryptantrine were prepared in order either to increase solubility and to study structure-activity relationship. All synthesized compounds were tested for antimicrobial activity.
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Affiliation(s)
- G Grandolini
- Istituto di Chimica e Tecnologia del Farmaco, Università degli Studi di Perugia
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7
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Grandolini G, Ambrogi V, Perioli L, D'Eramo D, Bernardini C, Giampietri A. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. XI. Synthesis and biological activity of several naphtho- and quinolino-1,4-thiazine and -1,4-thiazepine derivatives containing the imidazole ring. Farmaco 1997; 52:379-84. [PMID: 9372589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Several derivatives of naphthol[1,2-b]imidazo[1',2'-d]-1,4-thiazine and -1,4-thiazepine and imidazo[1',2'-4,5]-1,4-thiazino[3,2-c]quinoline and -1,4-thiazepino[3,2-c] quinoline have been synthesized. These compounds and other imidazo[2,1-d][1,5]benzothiazepine derivatives, previously synthesized, have been tested for their possible pharmacological activities. One of these substances displayed inhibitory activity on CNS, others showed an appreciable antiinflammatory effect. None of the naphtho and quinolino derivatives showed affinity for the benzodiazepine receptor.
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Affiliation(s)
- G Grandolini
- Istituto di Chimica e Tecnologia del Farmaco, Università degli Studi di Perugia, Italy
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8
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Palagiano F, Arenare L, De Caprariis P, Grandolini G, Ambrogi V, Perioli L, Filippelli W, Falcone G, Rossi F. Synthesis and SAR study of imidazo[2,1-b]benzothiazole acids and some related compounds with anti-inflammatory and analgesic activities. Farmaco 1996; 51:483-91. [PMID: 8765671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Some (un)substituted imidazo[2,1-b]benzothiazole carboxylic or acetic acids and some related compounds, i.e. imidazo[2,1-b]naphthol[2,1-d]thiazole, 4H-imidazo[2,1-c][1,4]benzothiazine, 4,5-dihydroimidazo[2,1-d][1,5]benzothiazepine carboxylic and acetic acids were synthesized and tested in vivo in order to study the structure-activity relationships (SAR) of their antiinflammatory and analgesic activities. Pharmacological assays confirmed the interest of this class of compounds as potential antiinflammatory and analgesic drugs with low side effects.
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Affiliation(s)
- F Palagiano
- Dipartimento di Chimica Farmaceutica e Tossicologica, Facoltà di Farmacia, Università degli Studi di Napoli Federico II, Italy
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9
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Grandolini G, Ambrogi V, Perioli L, Giannaccini G, Lucacchini A, Martini C. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. X--Synthesis and inhibition of benzodiazepine receptor binding of new 1,4-thiazine and 1,5-thiazepine polycondensed heterocycles with steroidal structure. Farmaco 1996; 51:203-7. [PMID: 8688143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Some naphtho[1,2,-b]-s-triazolo[4,3-d]-1,4-thiazine and 1,5-thiazepine and s-triazolo[4', 3'-4,5]-1,4-thiazino[3,2-c]quinoline derivatives have been synthesized and tested for their ability to displace [3H]RO 15-1788 binding from bovine brain membranes. Several compounds showed moderate binding affinity for the benzodiazepine receptor.
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Affiliation(s)
- G Grandolini
- Istituto di Chimica e Tecnologia del Farmaco, Università degli Studi di Perugia, Italy
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10
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Ambrogi V, Grandolini G, Perioli L, Giusti L, Lucacchini A, Martini C. Studies on annulated 1,4-benzothiazines and 1,5-benzothiazepines. IX. Imidazo [2,1-d][1,5] benzothiazepines: synthesis and in vitro benzodiazepine receptor affinity. Eur J Med Chem 1995. [DOI: 10.1016/0223-5234(96)88253-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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11
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Perioli L, Ambrogi V, Grandolini G, Giusti L, Lucacchini A, Martini C. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. VIII-Synthesis and inhibition of benzodiazepine receptor binding of some derivatives of triazino[3,4-c]-1,4-benzothiazine and triazino[3,4-d]-1,5-benzothiazepine, two new heterocyclic ring systems. Farmaco 1994; 49:245-251. [PMID: 8049004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Several series of triazino[3,4-c]-1,4-benzothiazines and triazino[3,4-d]-1,5-benzothiazepines were synthesized. Tentative syntheses performed to obtain 5H-as-triazino[3,4-c]-1,4-benzothiazin-1,2-diones and 5,6-dihydro-as-triazino[3,4-d]-1,5-benzothiazepin-1,2-diones gave rise to s-triazolo derivatives. Only in one case was the reaction successful, affording the 3,5-dihydro-as-triazino[3,4-c]-1,4-benzothiazin-1,2-dione 9a. All the final compounds were tested for their ability to displace [3H]flunitrazepam from bovine brain membranes.
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Affiliation(s)
- L Perioli
- Istituto di Chimica Farmaceutica, Università di Perugia, Italy
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12
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Ambrogi V, Grandolini G, Perioli L, Giampietri A. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. VI. Synthesis and preliminary pharmacological evaluation of 1-alkylaminomethyl-4,5-dihydro-s-triazolo[3,4-d]-1,5-benzothiazepines. Farmaco 1993; 48:653-664. [PMID: 8343212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A series of new 1-alkylaminomethyl derivatives of 4,5-dihydro-s- triazolo[3,4-d]-1,5-benzothiazepines has been prepared using chloromethyltriazolobenzothiazepines 4a-g as key intermediates. The 1-alkylaminomethyl derivatives were tested for CNS activity on mice and some of them caused remarkable decrease of spontaneous motor activity.
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Affiliation(s)
- V Ambrogi
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università degli Studi di Perugia, Italy
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13
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Ambrogi V, Grandolini G, Perioli L, Giusti L, Lucacchini A, Martini C. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. VII. Synthesis and inhibition of benzodiazepine receptor binding of some 4,5-dihydro-tetrazolo[5,1-d]-1,5-benzothiazepines and 5-phenyl-s-triazolo[3,4-d]-1,5-benzothiazepines. Farmaco 1993; 48:665-76. [PMID: 8393678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The 4,5-dihydro-tetrazolo[5,1-d]-1,5-benzothiazepines 3a-k and the 5-phenyl-s-triazolo[3,4-d]-1,5-benzothiazepines 6a-f and 11a-c have been prepared and tested for their ability to displace [3H] flunitrazepam binding from bovine brain membranes. Some of the triazoloderivatives showed moderate binding affinity for the benzodiazepine receptor.
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Affiliation(s)
- V Ambrogi
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università di Perugia, Italy
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14
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Baiocchi L, Giannangeli M, Rossi V, Ambrogi V, Grandolini G, Perioli L. Synthesis and antimicrobial activity of some new indolo[2,1-b]quinazolin-6(12H)ones. Farmaco 1993; 48:487-501. [PMID: 8357465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A series of indolo[2,1-b]quinazolin-6(12H)ones 4a-i was prepared and tested for the antimicrobial activity. The synthesis of the new compounds and the results of the antimicrobial screening are reported.
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Affiliation(s)
- L Baiocchi
- Istituto di Ricerca Francesco Angelini, Piazzale della Stazione S. Palomba, Pomezia, Roma
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15
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Grandolini G, Ambrogi V, Perioli L, de Caprariis P, Palagiano F, Rimoli MG, Lampa E, D'Amico M. Synthesis and pharmacological activity of imidazo[2,1-b]benzothiazole acids. Farmaco 1993; 48:31-43. [PMID: 8457278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We have prepared twelve imidazo[2,1-b]benzothiazole carboxylic and acetic acids by reaction of substituted 2-aminobenzothiazoles with ethyl bromopyruvate and 4-chloroacetoacetate, respectively. The acids, obtained from esters by hydrolysis, were tested for their antiinflammatory, analgesic and ulcerogenic activities.
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Affiliation(s)
- G Grandolini
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Facoltà di Farmacia, Università di Perugia
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16
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Ambrogi V, Giampietri A, Grandolini G, Perioli L, Ricci M, Tuttobello L. Studies on annelated [1,4]benzothiazines and [1,5]benzothiazepines, V. Synthesis and biological activity of N-2 alkylamino derivatives of 4,5-dihydro-s-triazolo[3,4-d]-1,5-benzothiazepine. Arch Pharm (Weinheim) 1992; 325:569-77. [PMID: 1444762 DOI: 10.1002/ardp.19923250909] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The synthesis of a new series of N-2 alkylamino derivatives of 4,5-dihydro-s-triazolo[3,4-d]-1,5-benzothiazepine has been accomplished starting from 2,3-dihydro-1,5-benzothiazepin-4(5H)ones and their 2-methyl and 2-aryl derivatives. All the compounds were tested in vitro for their antimicrobial activity, but none of them showed remarkable activity. The tricyclic compounds 7a-j, 8a-j, 9a-j, 10a-j, and 11a-j were also screened for their CNS activity in mice and several of them showed interesting activity.
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Affiliation(s)
- V Ambrogi
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università degli Studi di Perugia, Italy
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17
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Ambrogi V, Grandolini G, Perioli L, DeMia GM, Ricci M, Tuttobello L. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. IV. Synthesis and biological activity of new 1-substituted derivatives of 4H-s-triazolo[3,4-c]-1,4-benzothiazine and 4,5-dihydro-s-triazolo[3,4-d]-1,5-benzothiazepine. Eur J Med Chem 1991. [DOI: 10.1016/0223-5234(91)90011-b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Ambrogi V, Grandolini G, Perioli L, Ricci M, Rossi C, Tuttobello L. Synthesis, antibacterial and antifungal activities of several new benzo- naphtho- and quinolino-1,4-thiazine and 1,5-thiazepine derivatives. Eur J Med Chem 1990. [DOI: 10.1016/0223-5234(90)90003-l] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
From the wood of QUASSIA AMARA L. (Simarubaceae) two new canthin-6-one alkaloids have been isolated and their structures determined as 3-methyl-4-methoxy-5-hydroxycanthin-2,6-dione ( 1) and 4-methoxy-5-hydroxycanthin-6-one 3-, N-oxide ( 2) by spectroscopic and chemical methods. 3-Methylcanthin-5,6-dione ( 3) has been also isolated and identified for the first time from this source.
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Affiliation(s)
- P Barbetti
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università degli Studi di Perugia, Via del Liceo, I-06100 Perugia, Italy
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20
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Affiliation(s)
- G Grandolini
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università degli Studi di Perugia, Italy
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21
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Ambrogi V, Grandolini G, Rossi C, Tiralti MC. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. III--Synthesis and CNS activity of some 1-substituted derivatives of the novel heterocyclic system 4,5-dihydro-s-triazolo [3,4-d]-1,5-benzothiazepine. Farmaco Sci 1987; 42:575-83. [PMID: 3666128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A series of new 4,5-dihydro-s-triazolo [3,4-d]-1,5-benzothiazepines has been prepared. All the described compounds are representative of a novel ring system. Some of these compounds were tested for their CNS activity and effects comparable with the ones of diazepam were observed.
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Affiliation(s)
- V Ambrogi
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università di Perugia, Italy
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22
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Abstract
Three beta-carboline alkaloids have been isolated for the first time from the wood of QUASSIA AMARA L. (Simarubaceae) and their structures were determined to be 1-vinyl-4,8-dimethoxy-beta-carboline ( 1), 1-methoxycarbonyl-beta-carboline ( 2), and 3-methylcantin-2,6-dione ( 3) by spectral and chemical means.
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Affiliation(s)
- P Barbetti
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università degli Studi di Perugia, Via del Liceo, I-06100 Perugia, Italy
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23
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Grandolini G, Tiralti MC, Rossi C, Ambrogi V, Orzalesi G, De Regis M. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. II. Synthesis of new series of 1- or 2-substituted 4H-s-triazolo[3,4-c]-1,4-benzothiazines and related compounds with potential CNS activity. Farmaco Sci 1987; 42:43-60. [PMID: 3452546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
New series of 1- or 2-substituted 4H-s-triazolo[3,4-c]-1,4-benzothiazines have been prepared. The 1-substituted products were obtained starting from 3-hydrazino-2H-1,4-benzothiazine derivatives (III) by treatment with chloroacethyl chloride followed by cyclization of the resulting chloroacethylderivatives into the chloromethyltriazolobenzothiazines (IV a-e), which were then reacted with the appropriate amines to give the desired compounds (V a-n). Other 1-substituted compounds were prepared by ring closure of (III) with cyanogen bromide, affording 1-amino-4H-s-triazolo [3,4-c]-1,4-benzothiazines (XI a-e). The 2-substituted compounds (VIII) were prepared from 2,4-dihydro-1H-s-triazolo [3,4-c]-1,4-benzothiazin-1-ones (VII), synthesized from (I) by reaction with ethyl carbazate. The aminoalkyl side chain was introduced into (VII) in two steps: first by treatment with 1-bromo-3-chloropropane, then by refluxing the resulting product with the appropriate amine. Some 4H-tetrazolo[5,1-c]-1,4-benzothiazines (XII) were also synthesized from (III). Preliminary pharmacological data on the CNS activity of the synthesized tricyclic compounds are reported.
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Affiliation(s)
- G Grandolini
- Istituto di Chimica Farmaceutica e Tecnica Farmaceutica, Università di Perugia, Italy
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24
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Rossi C, Ambrogi V, Grandolini G, Scarcia V, Furlani A. Synthesis and in vitro cytotoxic activity of semisynthetic derivatives in the santonin series. J Pharm Sci 1986; 75:784-6. [PMID: 3772751 DOI: 10.1002/jps.2600750812] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The synthesis of two new santonin derivatives namely 3-oxo-6 beta-H-11 beta-phenylselenoeudesm-1,4-dien-6,13-olide and 3-oxo-6 beta H-eudesm-1,4,11-trien-6,13-olide is reported along with the results of a series of santonins tested for activity against the growth of KB cells in vitro, a human epidermoid nasopharynx carcinoma. Select compounds were found to be active at concentrations lower than 5 X 10(-5) M. In particular, the compound 2 alpha-bromo-3 beta-hydroxy-6 beta H-eudesm-11-en-6,13-olide exhibits an extremely low ID50 value at 0.33 X 10(-6) M. Some relationships between chemical structure and cytotoxic activity are suggested, i.e. the alpha-methylene-gamma-lactone moiety appears to be necessary for cytotoxic activity toward KB cells growth in vitro by santonin derivatives.
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Grandolini G, Rossi C, Tiralti MC, Orzalesi G, De Regis M. Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. I. Synthesis of 4H-s-triazolo[3,4-c]-1,4-benzothiazine and derivatives with potential CNS activity. Farmaco Sci 1985; 40:221-36. [PMID: 4018250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
As a part of a program toward the synthesis and the pharmacological studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines, a number of 4H-s-triazolo[3,4-c]-1,4-benzothiazine derivatives were prepared and tested for their CNS activity. The syntheses of the new tricyclic compounds (VII) were performed via the 2H-1,4-benzothiazine-3(4H)-thiones (II) which were obtained by Lawesson's thiation of lactams (I). Compounds (II) and their S-methyl-thioethers (III), quantitatively obtained by PTC method, were reacted with acylhydrazines to give the title compounds. Some triazolobenzothiazines (VII) were also prepared from 3-hydrazinoderivatives (IV) by cyclization with either an aliphatic acid or the corresponding orthoesther.
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Brunelli C, Tiralti MC, Grandolini G. [Quantitative determination of chloramphenicol in pharmaceutical preparations by NMR]. Boll Chim Farm 1982; 121:239-45. [PMID: 7138669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Tiralti MC, Brunelli C, Grandolini G. [Quantitative determination of diazepam in pharmaceutical preparations by PMR]. Boll Chim Farm 1982; 121:80-6. [PMID: 6289850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Casinovi CG, Fardella G, Grandolini G, Burinato C. [Antiamebic properties of some derivatives of ailantone and quassin]. Farmaco Sci 1981; 36:116-22. [PMID: 7227501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Owing to its high toxicity, ailanthone, one of the most potent in vivo amoebicidal drugs of natural origin, cannot be safely employed in clinical trials. With the aim of obtaining a compound with a better therapeutic index and of studying possible relationships between biological activity and chemical structure, many derivatives of ailanthone and of the chemically related, although biologically inactive, quassin have been prepared and tested.
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Brunelli C, Fravolini A, Grandolini G, Strappaghetti G. New heterocyclic ring systems. XII. Synthesis of [1,4]thiazinocarbazoles. J Heterocycl Chem 1980. [DOI: 10.1002/jhet.5570170140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fravolini A, Martani A, Grandolini G, Strappaghetti G. New helerocyclic ring systems from α-llydroxymethylenekelones. VIII. Polyuzasteroidal analogues of equilenin. J Heterocycl Chem 1977. [DOI: 10.1002/jhet.5570140108] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ballio A, Casinovi CG, Grandolini G, Randazzo G, Rossi C, Sorrentino M. 12-O-acetylfusicoccin and 12-O-acetylisofusicoccin, two new minor metabolites of Fusicoccum amygdali Del. Experientia 1974; 30:1108-9. [PMID: 4435100 DOI: 10.1007/bf01923634] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Ballio A, Casinovi CG, D'Alessio V, Grandolini G, Randazzo G, Rossi C. The 2,2'-dicyano-1,1'-dimethyl-4,4'-bipyridylium di-cation: a viologen indicator with a high redox potential. Experientia 1974; 30:843-4. [PMID: 4416617 DOI: 10.1007/bf01938313] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Ballio A, Casinovi CG, Framondino M, Grandolini G, Randazzo G, Rossi C. The structure of three isomers of monodeacetylfusicoccin. Experientia 1972; 28:1150-1. [PMID: 5087021 DOI: 10.1007/bf01946137] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Ballio A, Casinovi CG, Framondino M, Grandolini G, Menichini F, Randazzo G, Rossi C. The structures of isofusicoccin and allofusicoccin. Experientia 1972; 28:126-7. [PMID: 5020327 DOI: 10.1007/bf01935707] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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