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51
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He C, Bai Z, Hu J, Wang B, Xie H, Yu L, Ding H. A divergent [5+2] cascade approach to bicyclo[3.2.1]octanes: facile synthesis of ent-kaurene and cedrene-type skeletons. Chem Commun (Camb) 2018; 53:8435-8438. [PMID: 28702539 DOI: 10.1039/c7cc04292b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A solvent-dependent oxidative dearomatization-induced divergent [5+2] cascade approach to bicyclo[3.2.1]octanes was described. This novel protocol enables a facile synthesis of a series of diversely functionalized ent-kaurene and cedrene-type skeletons in good yields and excellent diastereoselectivities.
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Affiliation(s)
- Chi He
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| | - Zengbing Bai
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Jialei Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| | - Bingnan Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| | - Hujun Xie
- Department of Applied Chemistry, Zhejiang Gongshang University, Hangzhou 310018, China.
| | - Lei Yu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
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52
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Su F, Lu Y, Kong L, Liu J, Luo T. Total Synthesis of Maoecrystal P: Application of a Strained Bicyclic Synthon. Angew Chem Int Ed Engl 2018; 57:760-764. [DOI: 10.1002/anie.201711084] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Fan Su
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Yandong Lu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Lingran Kong
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Jingjing Liu
- Peking-Tsinghua Center for Life SciencesAcademy of Advanced Interdisciplinary Studies, Peking University Beijing 100871 China
| | - Tuoping Luo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
- Peking-Tsinghua Center for Life SciencesAcademy of Advanced Interdisciplinary Studies, Peking University Beijing 100871 China
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53
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Kobayashi S, Shibukawa K, Hamada Y, Kuruma T, Kawabata A, Masuyama A. Syntheses of (-)-Tripterifordin and (-)-Neotripterifordin from Stevioside. J Org Chem 2018; 83:1606-1613. [PMID: 29328659 DOI: 10.1021/acs.joc.7b02916] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report short syntheses of (-)-tripterifordin and (-)-neotripterifordin, potent inhibitors of HIV replication, from stevioside, a natural sweetener used worldwide. The key transformations are reduction at C13 through the formation of a tertiary chloride and subsequent three-step lactonization including a selective iodination at C20 by the photoreaction of the C19-alcohol. The title compounds were reliably obtained from stevioside in 9 and 11 steps (with 5-7 isolation steps), respectively. Additionally, the related lactone-containing ent-kaurenes, doianoterpenes A and B, and two more natural products were synthesized.
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Affiliation(s)
- Shoji Kobayashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology , 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Keisuke Shibukawa
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology , 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Yoshiki Hamada
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology , 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Takuma Kuruma
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology , 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Asako Kawabata
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology , 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
| | - Araki Masuyama
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology , 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
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54
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Liu X, Hu YJ, Fan JH, Zhao J, Li S, Li CC. Recent synthetic studies towards natural products via [5 + 2] cycloaddition reactions. Org Chem Front 2018. [DOI: 10.1039/c7qo01123g] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this review, we provide a summary of recent progress regarding synthetic studies towards natural products via [5 + 2] cycloaddition reactions.
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Affiliation(s)
- Xin Liu
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
- Department of Chemistry
| | - Ya-Jian Hu
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
- Department of Chemistry
| | - Jian-Hong Fan
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
- Department of Chemistry
| | - Jing Zhao
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
| | - Shaoping Li
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
| | - Chuang-Chuang Li
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
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55
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Su F, Lu Y, Kong L, Liu J, Luo T. Total Synthesis of Maoecrystal P: Application of a Strained Bicyclic Synthon. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711084] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fan Su
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Yandong Lu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Lingran Kong
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Jingjing Liu
- Peking-Tsinghua Center for Life SciencesAcademy of Advanced Interdisciplinary Studies, Peking University Beijing 100871 China
| | - Tuoping Luo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
- Peking-Tsinghua Center for Life SciencesAcademy of Advanced Interdisciplinary Studies, Peking University Beijing 100871 China
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56
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Abstract
Covering: December 2005 to June 2016. Previous review: Nat. Prod. Rep., 2006, 23, 673-698Over the last decade, great efforts have been made to conduct phytochemistry research on the genus Isodon, which have led to the isolation and identification of a number of diterpenoids. At the same time, these newly reported diterpenoids with diverse structures have led to new findings on their biological functions and chemical synthesis research. In this update, we review more than 600 new diterpenoids, including their structures, classifications, biogenetic pathways, bioactivities, and chemical synthesis.
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Affiliation(s)
- Miao Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, P. R. China.
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57
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Takatori K, Ota S, Tendo K, Matsunaga K, Nagasawa K, Watanabe S, Kishida A, Kogen H, Nagaoka H. Synthesis of Methylenebicyclo[3.2.1]octanol by a Sm(II)-Induced 1,2-Rearrangement Reaction with Ring Expansion of Methylenebicyclo[4.2.0]octanone. Org Lett 2017; 19:3763-3766. [DOI: 10.1021/acs.orglett.7b01604] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuhiko Takatori
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Shoya Ota
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Kenta Tendo
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Kazuma Matsunaga
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Kokoro Nagasawa
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Shinya Watanabe
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Atsushi Kishida
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Hiroshi Kogen
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Hiroto Nagaoka
- Graduate School of Pharmaceutical
Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
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58
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He C, Hu J, Wu Y, Ding H. Total Syntheses of Highly Oxidized ent-Kaurenoids Pharicin A, Pharicinin B, 7-O-Acetylpseurata C, and Pseurata C: A [5+2] Cascade Approach. J Am Chem Soc 2017; 139:6098-6101. [DOI: 10.1021/jacs.7b02746] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Chi He
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jialei Hu
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yubing Wu
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Department
of Chemistry, Zhejiang University, Hangzhou 310058, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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59
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Abstract
The isolation, structure elucidation, chemistry, biosynthesis and biological activity of the sweet steviol glycosides from Stevia rebaudiana, are reviewed.
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60
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Rhodomollins A and B, two Diterpenoids with an Unprecedented Backbone from the Fruits of Rhododendron molle. Sci Rep 2016; 6:36752. [PMID: 27841292 PMCID: PMC5107939 DOI: 10.1038/srep36752] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 10/20/2016] [Indexed: 11/17/2022] Open
Abstract
Two new grayanoids, rhodomollin A (1) and rhodomollin B (2), possessing an unprecedented D-homo grayanane carbon skeleton, were isolated from the fruits of Rhododendron molle. The structures of 1 and 2 were fully characterized using a combination of spectroscopic analyses and X-ray crystallography. Rhodomollin B (2) exhibited modest activity against influenza virus A/95-359, with an IC50 value of 19.24 μM.
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61
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Liu W, Li H, Cai PJ, Wang Z, Yu ZX, Lei X. Scalable Total Synthesis of rac
-Jungermannenones B and C. Angew Chem Int Ed Engl 2016; 55:3112-6. [DOI: 10.1002/anie.201511659] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Weilong Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Houhua Li
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Pei-Jun Cai
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Zhen Wang
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Zhi-Xiang Yu
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Xiaoguang Lei
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
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62
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Liu W, Li H, Cai PJ, Wang Z, Yu ZX, Lei X. Scalable Total Synthesis of rac
-Jungermannenones B and C. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511659] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Weilong Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Houhua Li
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Pei-Jun Cai
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Zhen Wang
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Zhi-Xiang Yu
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Xiaoguang Lei
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
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63
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Abstract
This review covers the isolation and chemistry of diterpenoids from terrestrial as opposed to marine sources and includes labdanes, clerodanes, pimaranes, abietanes, kauranes, cembranes and their cyclization products. The literature from January to December, 2015 is reviewed.
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