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Lyu MY, Zhong Z, Lo VKY, Wong HNC, Peng XS. Total Synthesis of Cryptotrione. Angew Chem Int Ed Engl 2020; 59:19929-19933. [PMID: 32692466 DOI: 10.1002/anie.202009255] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Indexed: 11/11/2022]
Abstract
The total synthesis of cryptotrione (1) was enabled by substrate-controlled diastereoselective construction of the bicyclo[3.1.0]hexene framework through platinum-catalyzed enyne cycloisomerization and Lewis acid induced polyene cyclization to construct the abietane-type tricyclic diterpene skeleton. The stereogenic tertiary carbon center in the side chain was installed in a diastereodivergent manner by conjugate addition reactions.
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Affiliation(s)
- Mao-Yun Lyu
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Zhuliang Zhong
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Vanessa Kar-Yan Lo
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Henry N C Wong
- School of Science and Engineering, The Chinese, University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China.,Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Xiao-Shui Peng
- School of Science and Engineering, The Chinese, University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China.,Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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2
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Lyu M, Zhong Z, Lo VK, Wong HNC, Peng X. Total Synthesis of Cryptotrione. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mao‐Yun Lyu
- Department of Chemistry State Key Laboratory of Synthetic Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR China
| | - Zhuliang Zhong
- Department of Chemistry State Key Laboratory of Synthetic Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR China
| | - Vanessa Kar‐Yan Lo
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Henry N. C. Wong
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen) Longgang District Shenzhen China
- Department of Chemistry State Key Laboratory of Synthetic Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR China
| | - Xiao‐Shui Peng
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen) Longgang District Shenzhen China
- Department of Chemistry State Key Laboratory of Synthetic Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR China
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Li J, Yang F, Hu W, Ren B, Chen ZS, Ji K. Gold(i)-catalyzed tandem cyclization of cyclopropylidene-tethered propargylic alcohols: an approach to functionalized naphtho[2,3-c]pyrans. Chem Commun (Camb) 2020; 56:9154-9157. [PMID: 32657308 DOI: 10.1039/d0cc03285a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An unprecedented gold(i)-catalyzed cyclization of cyclopropylidene-tethered propargylic alcohols via a 6-endo-dig enyne cyclization followed by a ring-opening of cyclopropane and nucleophilic closure reaction to construct naphtho[2,3-c]pyrans was developed. This transformation represents a highly efficient method for the synthesis of polycyclic compounds in one-pot, and two new rings are formed in an atom economic manner.
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Affiliation(s)
- Jian Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China. and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fang Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China.
| | - Weiwei Hu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China.
| | - Bo Ren
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China.
| | - Zi-Sheng Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China.
| | - Kegong Ji
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China.
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4
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Brito GA, Jung WO, Yoo M, Krische MJ. Enantioselective Iridium-Catalyzed Allylation of Acetylenic Ketones via 2-Propanol-Mediated Reductive Coupling of Allyl Acetate: C14-C23 of Pladienolide D. Angew Chem Int Ed Engl 2019; 58:18803-18807. [PMID: 31490591 PMCID: PMC6917958 DOI: 10.1002/anie.201908939] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/26/2019] [Indexed: 11/10/2022]
Abstract
Highly enantioselective catalytic reductive coupling of allyl acetate with acetylenic ketones occurs in a chemoselective manner in the presence of aliphatic or aromatic ketones. This method was used to construct C14-C23 of pladienolide D in half the steps previously required.
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Affiliation(s)
- Gilmar A. Brito
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Woo-Ok Jung
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Minjin Yoo
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
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5
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Brito GA, Jung W, Yoo M, Krische MJ. Enantioselective Iridium‐Catalyzed Allylation of Acetylenic Ketones via 2‐Propanol‐Mediated Reductive Coupling of Allyl Acetate: C14‐C23 of Pladienolide D. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Gilmar A. Brito
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Woo‐Ok Jung
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Minjin Yoo
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Michael J. Krische
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
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