Total Synthesis of (−)-Batrachotoxinin A

  • Author:
  • Published: 24 February 2020
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Journal of the American Chemical Society/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Total Synthesis of (−)-Batrachotoxinin A

(−)-Batrachotoxin is a highly toxic alkaloid first found on poison-dart frogs in South America. It is an important tool for studying ion transport across cell membranes, specifically voltage-gated sodium channels. (−)-Batrachotoxinin A (pictured) is a less potent derivative. It could be converted to analogues that are also useful for the study of sodium transport. However, the total synthesis of these compounds is challenging due to their complex structure and highly oxidized nature.

Tuoping Luo, Peking University, Beijing, China, and colleagues have performed an efficient enantioselective total synthesis of (−)-batrachotoxinin A. The team started from ethyl vinyl ether, a bicyclic diketone, a bicyclic α-bromoketone, methylamine, and chloroacetyl chloride. The bicyclic systems were coupled using a photoredox coupling reaction and the resulting intermediate was subjected to a local-desymmetrization operation to create the steroid skeleton.

The researchers were able to perform the synthesis on a gram scale until a late-stage intermediate. Due to the toxicity of the product, they chose a smaller-scale reaction for the final steps. According to the team, the synthesis could also be used to prepare other highly oxidized natural products.



Article Views: 1697

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH