申请人:Merck & Co., Inc.
公开号:EP0240256A2
公开(公告)日:1987-10-07
The present invention is directea to compounds or the formula (I) useful as anti-sickling agents and to pharmaceutical compositions of these compounds wherein formula
V is selected from:
which R, is ethyl, propyl or isopropyl;
in which R2 is H or lower alkyl;
in which
R3 is lower alkyl;
W is selected from:
. A2 is (CH2)n2 -C(CH3)2, -C(CH2)3- and n2= 1 to 5; X is 0 or 1;
R3 is HO- or
A3 is -(CH2)n3 or -C(CH2)3- and
n3 = 1 to 5;
m is 0 or 1;
and
Y is H, Cl or OCH3;
Z is H or Cl;
provided that
(i) when W is
and Y and Z are Cl;
(ii) when W is
Y and Z are Cl, with the proviso that when R2 is C2H5, R2 is H and X is O, n2 is 2 to 5;
(iii) When W is
with the proviso that when R3 is OH, Y is H or Cl and m is 1, n3 = 4 or 5; (iv) when W is
and Y and Z are Cl.
本发明涉及可用作抗痒痒剂的式 (I) 化合物,以及这些化合物的药物组合物,其中式 (I) 为
V 选自
其中 R 是乙基、丙基或异丙基;
其中 R2 是 H 或低级烷基
其中
R3 是低级烷基;
W 选自
.A2 是 (CH2)n2 -C(CH3)2、-C(CH2)3-,且 n2= 1 至 5;X 是 0 或 1;
R3 是 HO- 或
A3 是-(CH2)n3 或-C(CH2)3-,且
n3= 1 至 5;
m 为 0 或 1;
和
Y 是 H、Cl 或 OCH3;
Z 是 H 或 Cl;
条件是
(i) 当 W 是
且 Y 和 Z 均为 Cl
(ii) 当 W 是
Y 和 Z 均为 Cl,但当 R2 为 C2H5、R2 为 H 和 X 为 O 时,n2 为 2 至 5;
(iii) 当 W 是
但当 R3 为 OH、Y 为 H 或 Cl 且 m 为 1 时,n3=4 或 5;(iv) 当 W 为 C2H5、R2 为 H 且 X 为 O 时,n3=4 或 5。
且 Y 和 Z 为 Cl 时。