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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-\n                    <jats:italic>epi<\/jats:italic>\n                    -androsterone. Our synthesis readily provides gram quantities of both target natural products by utilizing a biomimetic rearrangement to form the C-\n                    <jats:italic>nor<\/jats:italic>\n                    -D-\n                    <jats:italic>homo<\/jats:italic>\n                    steroid core and a stereoselective reductive coupling\/(bis-)cyclization sequence to establish the (E)\/F-ring moiety.\n                  <\/jats:p>","DOI":"10.1038\/s41467-024-49748-2","type":"journal-article","created":{"date-parts":[[2024,6,22]],"date-time":"2024-06-22T14:01:47Z","timestamp":1719064907000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Divergent and gram-scale syntheses of (\u2013)-veratramine and (\u2013)-cyclopamine"],"prefix":"10.1038","volume":"15","author":[{"given":"Wenlong","family":"Hou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanru","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuang","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiajun","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3773-8554","authenticated-orcid":false,"given":"Xiao-Yu","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3434-5747","authenticated-orcid":false,"given":"Yong","family":"Qin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,6,22]]},"reference":[{"key":"49748_CR1","doi-asserted-by":"publisher","first-page":"23","DOI":"10.1007\/s13659-022-00345-0","volume":"12","author":"M Xiang","year":"2022","unstructured":"Xiang, M. et al. 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