Oxidant sensitive and insensitive aromatic esters as inhibitors of human neutrophil elastase
申请人:CORTECH, INC.
公开号:EP0465802A1
公开(公告)日:1992-01-15
2-Phenylalkanoate esters which are useful as inhibitors of human leukocyte elastase are illustrated by the following formula:
wherein:
R₁ and R₂, which may be the same or different, are selected from the group consisting of: hydrogen, alkyl, cycloalkyl or together represent a methylene group -(CH₂)n- where n is a whole number of from 1 to 6; R₃ represents one or more substituents up to five selected from the group consisting of:
hydrogen, halogen, haloalkyl (e.g., CF₃), alkyl, alkoxy, cycloalkyl, alkenyl, mono- or dicyclic aryl (e.g., optionally substituted phenyl or naphthyl),
-ZR₅ where Z is O, S, S(O)₂ or SO, and R₅ is hydrogen alkyl, cycloalkyl or phenyl;
-NR₆R₇ wherein R₆ and R₇ may be the same or different and may be hydrogen, alkyl, cycloalkyl, phenyl, alkoxy, acyl of the formula -C(O)R₈ where R₈ is alkyl, cycloalkyl, phenyl, CH₃OC(O)CH₂CH₂-, HOOCCH₂CH₂-, NaO₃SCH₂CH₂NHC(O)CH₂CH₂-, or R₆ and R₇ together represent -C(O)CH₂CH₂C(O)-, -C(O)-C₆H₄-C(O)- or -(CH₂)x-where x is 2, 3, 4, 5 or 6;
morpholino, imidazolino or piperazino joined to the phenyl ring through a nitrogen atom; or
R₃ represents the atoms necessary to complete between adjacent ring carbons a further carbocyclic ring of from 1 to 6 carbons or a 5-6 membered heterocyclic ring including one or more O, S or N ring atoms; and R₄ is from one to five substituents selected from hydrogen, halogen, nitro, -C(O)CH₃, S(O)pR₉ where p is 0, 1 or 2 and R₉ is hydroxy, -ONa or optionally substituted alkyl or optionally substituted cycloalkyl including, for example, lower alkyl substituted with halogen (such as trifluoromethyl) or lower alkyl bearing a carboxylic acid group, especially -CH₂C(CH₃)₂CO₂H.
可用作人类白细胞弹性蛋白酶抑制剂的 2-苯基烷酸酯如下式所示:
其中
R₁和 R₂可以相同或不同,选自由氢、烷基、环烷基组成的组,或共同代表亚甲基-(CH₂)n-,其中 n 为 1 至 6 的整数;R₃代表一个或多个取代基,最多五个,选自由以下组成的组:
氢、卤素、卤代烷基(如 CF₃)、烷基、烷氧基、环烷基、烯基、单环或双环芳基(如任选取代的苯基或萘基)、
-ZR₅,其中 Z 是 O、S、S(O)₂ 或 SO,R₅ 是氢烷基、环烷基或苯基;
-NR₆R₇,其中 R₆ 和 R₇ 可以相同或不同,可以是氢、烷基、环烷基、苯基、烷氧基、式 -C(O)R₈ 的酰基,其中 R₈ 是烷基、环烷基、苯基、CH₃OC(O)CH₂CH₂-, HOOCCH₂CH₂-, NaO₃SCH₂CH₂NHC(O)CH₂CH₂-, 或 R₆ 和 R₇ 共同代表 -C(O)CH₂CH₂C(O)-, -C(O)-C₆H₄-C(O)- 或 -(CH₂)x- 其中 x 为 2、3、4、5 或 6;
通过氮原子与苯环连接的吗啉基、咪唑基或哌嗪基;或
R₃ 代表在相邻环的碳原子之间形成一个碳原子数为 1 至 6 的碳环或一个包含一个或多个 O、S 或 N 环原子的 5-6 位杂环所需的原子;R₄是一至五个取代基,选自氢、卤素、硝基、-C(O)CH₃、S(O)pR₉,其中 p 是 0、1 或 2,R₉ 是羟基、-ONa 或任选取代的烷基或任选取代的环烷基,包括、例如,被卤素(如三氟甲基)取代的低级烷基或带有羧酸基团的低级烷基,特别是 -CH₂C(CH₃)₂CO₂H。