Process for the preparation of angiotensin receptor blockers and intermediates thereof
申请人:Joshi Shriram Narendra
公开号:US20060211866A1
公开(公告)日:2006-09-21
A process for the preparation of a biphenyl-containing compound of general formula I:
wherein R
1
is a C
3-6
carbonyl containing compound; R
2
is a substituted or unsubstituted, straight or branched C
3-6
alkyl group, or R
1
and R
2
together with the nitrogen atom to which they are bonded are joined together to form a substituted heterocyclic group selected from the group consisting of substituted or unsubstituted imidazoles, substituted or unsubstituted benzimidazoles and substituted or unsubstituted 1,3-diazaspiro[4,4]non-1-en-4-one; and R
3
is a carboxylic acid ester, cyano, a substituted or unsubstituted 1H-tetrazolyl group or a substituted or unsubstituted group which may be converted in vivo into a carboxy group is provided, the process comprising reacting a compound of general formula II:
wherein R
1
and R
2
have the aforestated meanings with a compound of general formula III:
wherein Z is a leaving group and R
3
has the aforestated meaning in a biphasic solvent system in the presence of a phase transfer catalyst.
一种制备含有苯基化合物的方法,其一般式为I:其中R1是含有C3-6羰基的化合物;R2是取代或未取代的直链或支链C3-6烷基基团,或R1和R2与它们连接的氮原子一起结合形成所选的取代杂环基团,所选的取代杂环基团来自所选的取代咪唑,取代苯并咪唑和取代1,3-二氮杂螺[4,4]非-1-烯-4-酮;而R3是羧酸酯,氰基,取代或未取代的1H-四唑基团或可在体内转化为羧基团的取代或未取代基团。该方法包括在相转移催化剂存在下,在两相溶剂体系中,将具有一般式II的化合物与具有一般式III的化合物反应,其中Z是离去基团,而R3具有前述含义。