Citation: Rui Wu LIU, Ji Yu GUO, Xiao Tian LiANG. Construction of the Oxetane Ring from 5α-Acyloxy-Δ⁴⁽²⁰⁾-taxoids[J]. Chinese Chemical Letters, ;1997, 8(2): 99-100. shu

Construction of the Oxetane Ring from 5α-Acyloxy-Δ⁴⁽²⁰⁾-taxoids

Institute of Materia Medica, Chinese Academy of Med. Sci. & Peking Union Med. College, Beijing 100050

Received Date: 19 November 1996

An oxetane ring can be constructed from 5α-acyloxy-△⁴⁽²⁰⁾-taxoids with osmylation as the first step in the usual manner.The innovation reported here is the use of an intramolecularly available acyl group for the protection of 20-OH by an unexpected 5-to 20-migration under slightly basic conditions.
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