申请人:——
公开号:US20040073033A1
公开(公告)日:2004-04-15
A process for the preparation of a class of phenylalanine enamide derivatives is described:
1
wherein:
Ar
1
is an optionally substituted aromatic or heteroaromatic group; L
2
is a linker group selected from —N(R
4
)—[where R
4
is a hydrogen atom or an optionally substituted straight or branched C
1-6
alkyl group], —CON(R
4
)—, or —S(O)
2
N(R
4
)—;
R
1
is a carboxylic acid (—CO
2
H) or a derivative or biostere thereof; R
2
is a hydrogen atom or a C
1-6
alkyl group; R
x
, R
y
and R
z
which may be the same or different is each an atom or group —L
1
(Alk
1
)
n
(R
3
)
v
;
and the salts, solvates, hydrates and N-oxides thereof;
which comprises reacting a compound of formula (2):
2
wherein:
Q
a
is a group —N(R
4
)H;
and the salts, solvates, hydrates and N-oxides thereof;
with a compound Ar
1
W wherein W is a group selected from X
1
(wherein X
1
is a leaving atom or group), —COX
2
(wherein X
2
is a halogen atom or a —OH group) or —SO
2
X
3
(in which X
3
is a halogen atom).
本发明涉及一种制备苯丙氨酸烯酰胺衍生物的方法:其中:Ar1是可选取代的芳香或杂芳基;L2是选择自—N(R4)—[其中R4是氢原子或可选取代的直链或支链C1-6烷基]、—CON(R4)—或—S(O)2N(R4)—的连接基;R1是羧酸(—CO2H)或其衍生物或生物立体异构体;R2是氢原子或C1-6烷基;Rx、Ry和Rz,它们可以相同也可以不同,每个都是原子或基团—L1(Alk1)n(R3)v;以及其盐、溶剂化物、水合物和N-氧化物;该方法包括将式(2)的化合物:其中:Qa是—N(R4)H基团;及其盐、溶剂化物、水合物和N-氧化物,与化合物Ar1W反应,其中W是选择自X1(其中X1是离去原子或基团)、—COX2(其中X2是卤素原子或—OH基团)或—SO2X3(其中X3是卤素原子)的基团。