6-Chloro-6-deoxy-D-hexitols, their esters, their preparation, fertility control compositions containing them and their use in a contraceptive method
申请人:TATE & LYLE PUBLIC LIMITED COMPANY
公开号:EP0015652A1
公开(公告)日:1980-09-17
6-Chloro-6-deoxy-D-hexitols, a novel class of compounds, and their esters, possess male antifertility activity and are thus useful in antifertility compositions. They are prepared by reduction of 6-chloro-6-deoxy-D-hexoses.
A process for the preparation of a chlorodeoxy derivative of a reducing aldose having a primary hydroxy group in an exocyclic -CH20H group, in which the said primary hydroxy group is replaced by a chlorine atom to give a chlorodeoxy reducing sugar with a free anomeric centre, characterised in that the free reducing sugar is reacted with a reagent comprising an N,N-dialkyl (methaniminium) chloride obtained by reacting an N,N-dialkyl formamide with a chlorinating agent.