Asperosin A, a [4+2] Diets-Alder cyctoaddition polyketide dimer from Aspergillus rugulosa with immunosuppressive activity

A novel homologous polyketide dimer, asperosin A (1), constructed with a unique hetero-bicycle 6/5 ring system featuring four continuous quaternary carbons, was isolated from a solid culture of the fungus Aspergillus rugulosa. The structure of 1 was elucidated by extensive 400 MHz and 600 MHz nuclea...

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Published inORGANIC CHEMISTRY FRONTIERS Vol. 9; no. 9; pp. 2477 - 2485
Main Authors Qiao, Yuben, Tan, Xiaosheng, Xu, Qianqian, Zhang, Zijun, Xu, Qiaoxin, Tao, Li, Liu, Junjun, Zhu, Hucheng, Chen, Chunmei, Ye, Ying, Lu, Yuanyuan, Chen, Gang, Qi, Changxing, Zhang, Yonghui
Format Journal Article
LanguageEnglish
Published CAMBRIDGE Royal Soc Chemistry 03.05.2022
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ISSN2052-4129
DOI10.1039/d1qo01767e

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Abstract A novel homologous polyketide dimer, asperosin A (1), constructed with a unique hetero-bicycle 6/5 ring system featuring four continuous quaternary carbons, was isolated from a solid culture of the fungus Aspergillus rugulosa. The structure of 1 was elucidated by extensive 400 MHz and 600 MHz nuclear magnetic resonance (NMR) spectroscopy analysis, electronic circular dichroism (ECD) calculations, DP4(+) probability analysis, and a detailed discussion of its biosynthetic origin. Biogenetically, compound 1 was constructed from two identical original polyketides via the intermolecular [4 + 2] Diels-Alder cyclo-addition reaction. It is notable that compound 1 displayed remarkable immunosuppressive activity in murine splenocytes and human T cells stimulated by anti-CD3/anti-CD28 monoclonal antibodies.
AbstractList A novel homologous polyketide dimer, asperosin A (1), constructed with a unique hetero-bicycle 6/5 ring system featuring four continuous quaternary carbons, was isolated from a solid culture of the fungus Aspergillus rugulosa. The structure of 1 was elucidated by extensive 400 MHz and 600 MHz nuclear magnetic resonance (NMR) spectroscopy analysis, electronic circular dichroism (ECD) calculations, DP4(+) probability analysis, and a detailed discussion of its biosynthetic origin. Biogenetically, compound 1 was constructed from two identical original polyketides via the intermolecular [4 + 2] Diels-Alder cyclo-addition reaction. It is notable that compound 1 displayed remarkable immunosuppressive activity in murine splenocytes and human T cells stimulated by anti-CD3/anti-CD28 monoclonal antibodies.
Author Xu, Qianqian
Xu, Qiaoxin
Qiao, Yuben
Ye, Ying
Zhang, Zijun
Zhu, Hucheng
Tao, Li
Lu, Yuanyuan
Chen, Chunmei
Qi, Changxing
Chen, Gang
Liu, Junjun
Zhang, Yonghui
Tan, Xiaosheng
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  givenname: Ying
  surname: Ye
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  givenname: Yuanyuan
  surname: Lu
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  givenname: Yonghui
  surname: Zhang
  fullname: Zhang, Yonghui
  email: zhangyh@mails.tjmu.edu.cn
  organization: Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Pharm, Hubei Key Lab Nat Med Chem & Resource Evaluat, Wuhan 430030, Peoples R China
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Snippet A novel homologous polyketide dimer, asperosin A (1), constructed with a unique hetero-bicycle 6/5 ring system featuring four continuous quaternary carbons,...
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Chemistry, Organic
Physical Sciences
Science & Technology
Title Asperosin A, a [4+2] Diets-Alder cyctoaddition polyketide dimer from Aspergillus rugulosa with immunosuppressive activity
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