79.
    发明专利
    未知

    公开(公告)号:BRPI0709567A2

    公开(公告)日:2011-07-12

    申请号:BRPI0709567

    申请日:2007-03-14

    Applicant: VERTEX PHARMA

    Abstract: This invention relates to a process for preparing a compound of Formula 1 wherein: the carbon atoms alpha and beta to the carboxy group are stereocenters; R 1 is independently H, optionally substituted aliphatic, optionally substituted cycloaliphatic, optionally substituted arylaliphatic, optionally substituted heteroaliphatic or optionally substituted heteroarylaliphatic; R' 1 is deuterium such that the deuterium enrichment is at least 50%; R' 2 is -NHR 2 or -OE; R 2 is H, optionally substituted aliphatic, optionally substituted cycloaliphatic, optionally substituted arylaliphatic, optionally substituted heteroaliphatic or optionally substituted heteroarylaliphatic; and E is C 1-6 alkyl or benzyl; wherein the process comprises the steps of: a) forming a salt of a compound of Formula 1, and b) crystallizing said salt to give a compound of greater than 55% enantiomeric excess.

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