申请人:Sumitomo Chemical Company, Limited
公开号:EP1666440A1
公开(公告)日:2006-06-07
The present invention provides a process for producing an aromatic unsaturated compound of the formula (4)
wherein Ar represents an optionally substituted aromatic group or an optionally substituted heteroaromatic group, and Y represents an electron withdrawing group,
which comprises reacting
(a) a compound of the formula (1)
Ar-―H (1)
wherein Ar has the same meaning as defined above with
(b) a compound of the formula (2)
wherein Y has the same meaning as defined above, and Z represents a lower alkoxy, or
a compound of the formula (3)
wherein Y and Z have the same meanings as defined above, in the presence of
(c) an acid or a compound which generates a mineral acid by its hydrolysis.
formula (1) is a compound of the formula (5)
wherein R1 represents a phenyl optionally substituted by halogen(s), a hydrogen or an alkyl and R2 represents an alkyl or a phenyl optionally substituted by halogen(s), and
the compound of the formula (4) is a compound of the formula (6)
wherein R1 and R2 have the same meanings as defined above.
A process for producing fluvastatin which comprises carrying out a process according to claim 1 to obtain a compound of formula (4) which is a compound of formula (7)
and then converting the compound of formula (7) to fluvastatin.
本发明提供了一种生产式(4)芳香族不饱和化合物的工艺
其中 Ar 代表任选取代的芳香族基团或任选取代的杂芳香族基团,Y 代表取电子基团、
其中包括
(a) 式 (1) 的化合物
Ar--H (1)
其中 Ar 的含义与上述定义相同
(b) 式 (2) 的化合物
其中 Y 的含义与上述定义相同,Z 代表低级烷氧基,或
式 (3) 的化合物
其中 Y 和 Z 的含义与上文所定义的相同。
(c) 酸或通过水解产生矿物酸的化合物。
式(1)为式(5)化合物
其中 R1 代表任选被卤素、氢或烷基取代的苯基,R2 代表任选被卤素取代的烷基或苯基,以及
式(4)化合物是式(6)化合物
其中 R1 和 R2 的含义与上述定义相同。
一种生产氟伐他汀的工艺,包括实施根据权利要求 1 所述的工艺,以获得式(4)化合物, 该式(4)化合物为式(7)化合物
然后将式(7)化合物转化为氟伐他汀。