Divergent and gram-scale syntheses of (–)-veratramine and (–)-cyclopamine

Wenlong Hou, Hao Lin, Yanru Wu, Chuang Li, Jiajun Chen, Xiao-Yu Liu () and Yong Qin ()
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Wenlong Hou: Sichuan University
Hao Lin: Sichuan University
Yanru Wu: Sichuan University
Chuang Li: Sichuan University
Jiajun Chen: Sichuan University
Xiao-Yu Liu: Sichuan University
Yong Qin: Sichuan University

Nature Communications, 2024, vol. 15, issue 1, 1-6

Abstract: Abstract Veratramine and cyclopamine, two of the most representative members of the isosteroidal alkaloids, are valuable molecules in agricultural and medicinal chemistry. While plant extraction of these compounds suffers from uncertain supply, efficient chemical synthesis approaches are in high demand. Here, we present concise, divergent, and scalable syntheses of veratramine and cyclopamine with 11% and 6.2% overall yield, respectively, from inexpensive dehydro-epi-androsterone. Our synthesis readily provides gram quantities of both target natural products by utilizing a biomimetic rearrangement to form the C-nor-D-homo steroid core and a stereoselective reductive coupling/(bis-)cyclization sequence to establish the (E)/F-ring moiety.

Date: 2024
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DOI: 10.1038/s41467-024-49748-2

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