Enantiodivergent, Biocatalytic Routes to Both Taxol Side Chain Antipodes
作者:Brent D. Feske、Iwona A. Kaluzna、Jon D. Stewart
DOI:10.1021/jo0516077
日期:2005.11.1
N-benzoyl phenylisoserine Taxol sidechain. After base-mediated ring closure of the chlorohydrin enantiomers, the epoxides were converted directly to the oxazoline form of the target molecules using a Ritter reaction with benzonitrile. These were hydrolyzed to the ethyl ester form of the Taxol sidechain enantiomers under acidic conditions. This brief and atom-efficient route to both target enantiomers
Novel methods for the preparation of sidechain-bearing taxanes, comprising the preparation of an oxazoline compound, coupling the oxazoline compound with a taxane having a hydroxyl group directly bonded at C-13 thereof to form an oxazoline sidechain-bearing taxane, and opening the oxazoline ring of the oxazoline sidechain-bearing taxane so formed. Novel compounds prepared by the methods of the present invention are also provided.
Method for the preparation of novel sidechain-bearing taxanes and intermediates thereof
申请人:Bristol-Myers Squibb Company
公开号:US06515151B1
公开(公告)日:2003-02-04
Methods for the preparation of sidechain-bearing taxanes, comprising the preparation of an oxazoline compound, coupling the oxazoline compound with a taxane having a hydroxyl group directly bonded at C-13 thereof to form an oxazoline sidechain-bearing taxane, and opening the oxazoline ring of the oxazoline sidechain-bearing taxane so formed. Compounds prepared by the methods of the present invention are also disclosed.
Methods for the preparation of novel sidechain-bearing taxanes
申请人:——
公开号:US05973160A1
公开(公告)日:1999-10-26
Novel methods for the preparation of sidechain-bearing taxanes, comprising the preparation of an oxazoline compound, coupling the oxazoline compound with a taxane having a hydroxyl group directly bonded at C-13 thereof to form an oxazoline sidechain-bearing taxane, and opening the oxazoline ring of the oxazoline sidechain-bearing taxane so formed. Novel compounds prepared by the methods of the present invention are also provided.