申请人:MERCK FROSST CANADA INC.
公开号:EP0338782A1
公开(公告)日:1989-10-25
Benzofuran derivatives are useful as inhibitors of mammalian leuktoriene biosynthesis. As such, these compounds are useful therapeutic agents for treating allergic conditions, asthma, cardiovascular disorders, inflammation. The compounds are also useful as analgesics and as cytoprotective agents, and for these uses are made into pharmaceutical compositions. The compounds of the invention have the formula
wherein:
each R1 is independently hydrogen or C1 to C6 alkyl;
R2 is hydrogen, C1 to C8 alkyl, -(CH2)n-het-Y, -(CH2)n-Q or - CH- Q, CH3 where Q is
R3 is hydroxyl,
, OCOCH2CH2COOH, OSO3H, or OPO3H2; each R4 is independently C1 to C6 alkyl;
each R5 is independently H, C1 to C6 alkyl, or both R5s join to form a 5- or 6-membered ring with the N to which they are attached;
Het is a heterocyclic group selected from pyridine, pyrazine, pyrimidine, oxazole, pyrazole, oxadiazole, tetrazole, quinoline, thiophene, furan, pyrrole, thiazole, thiadiazole, or imidazole;
X is 0, S, SO, SO2;
Y, Y1, Y2, Y3, Y4 and Z are each independently H, halogen, OH.
C1 to C6 alkyl, C2 to C6 alkenyl, C1-6hydroxyalkyl, -COOR1, -COR1, nitro, carboxy (C1-6alkyl), C1 to C6 alkoxy, C1 to C6 alkylthio, -CH2SR1, OCH2CO2R1,
and each n is independently 0 to 10; with the provisos that:
(a) not all of R1, R2, Y, Y1, Y2, Y3, Y4, and Z are simultaneously H;
(b) when up to 2 of R1, R2, Y, Y1, and Z are C1 to C2 alkyl, and the others of R1, R2, Y, Y1, and Z are H, then R3 is not OH; and
(c) when n in
is O and one of R3, Y, Y1 or Z is OH, then Ri is not H or Ci to C2 alkyl; or are acid-addition salts thereof.
苯并呋喃衍生物可作为哺乳动物白细胞介素生物合成的抑制剂。因此,这些化合物是治疗过敏症、哮喘、心血管疾病和炎症的有效药物。这些化合物还可用作镇痛剂和细胞保护剂,并可用于制成药物组合物。本发明的化合物具有如下式子
其中
每个 R1 独立地为氢或 C1 至 C6 烷基;
R2 是氢、C1 至 C8 烷基、-(CH2)n-het-Y、-(CH2)n-Q 或-CH- Q, CH3 其中 Q 是
R3 是羟基、
OCOCH2CH2COOH、OSO3H 或 OPO3H2;每个 R4 独立地是 C1 至 C6 烷基;
每个 R5 独立地为 H、C1-C6 烷基,或两个 R5 与所连接的 N 连接形成 5 或 6 元环;
Het 是杂环基团,选自吡啶、吡嗪、嘧啶、噁唑、吡唑、噁二唑、四唑、喹啉、噻吩、呋喃、吡咯、噻唑、噻二唑或咪唑;
X 是 0、S、SO、SO2;
Y、Y1、Y2、Y3、Y4 和 Z 各自独立地是 H、卤素、OH
C1-C6烷基、C2-C6烯基、C1-6羟基烷基、-COOR1、-COR1、硝基、羧基(C1-6烷基)、C1-C6烷氧基、C1-C6烷硫基、-CH2SR1、OCH2CO2R1、
且每个 n 独立地为 0 至 10;但有以下条件:
(a) 并非所有 R1、R2、Y、Y1、Y2、Y3、Y4 和 Z 同时都是 H;
(b) 当 R1、R2、Y、Y1 和 Z 中最多有 2 个是 C1 至 C2 烷基,而 R1、R2、Y、Y1 和 Z 中的其它是 H 时,则 R3 不是 OH;以及
(c) 当 n
为 O 且 R3、Y、Y1 或 Z 中的一个为 OH 时,则 Ri 不是 H 或 Ci 至 C2 烷基;或为其酸加成盐。