Disclosed is a process for production of 7-ethyl-10-[4-(1-piperidino)-1-piperidino]-carbonyloxycamptothecin from a camptothecin composition containing 18,19-dehydrocamptothecin without producing any vinyl form of the compound. The process is characterized by catalytically reducing at least one compound selected from a compound (1) and others in the process of producing a compound (5) from a composition containing the compound (1).
US8476438B2
申请人:——
公开号:US8476438B2
公开(公告)日:2013-07-02
A camptothecin derivative from nothapodytes foetida
Abstract A novel comptothecin derivative was isolated from the wood of Nothapodytesfoetida . Its structure was elucidated by spectral data as (20 S )-18,19-dehydrocamptothecin.
摘要 从 Nothapodytes foetida 的木材中分离得到一种新的 Comptothecin 衍生物。其结构通过光谱数据阐明为 (20 S )-18,19-脱氢喜树碱。