A novel series of potenthistamineH3receptor inverse agonists based on the 3,4-dihydro-2H-pyrazino[1,2-a]indol-1-one scaffold has been discovered. Several compounds display high selectivity over other histaminereceptor subtypes and have favorable physicochemical properties, low potential for CYP450 enzyme inhibition and high metabolic stability in microsomal preparations. (R)-2-Cyclopropylmethy
已经发现了基于3,4-二氢-2 H-吡嗪并[1,2 - a ]吲哚-1-酮骨架的一系列新的强组胺H 3受体反向激动剂。几种化合物显示出对其他组胺受体亚型的高选择性,并具有良好的理化特性,对CYP450酶的抑制作用低以及微粒体制剂中的高代谢稳定性。(- [R)-2-环丙基甲基-8-(1-异丙基-哌啶-4-基氧基)-3-甲基-3,4-二氢-2 H ^ -吡嗪并[1,2一]吲哚-1-酮(8吨)口服后在急性大鼠成水模型中表现出良好的体内功效。
Tricyclic amide derivatives as modulators of H3 receptors
申请人:Hoffmann-La Roche Inc.
公开号:US07786109B2
公开(公告)日:2010-08-31
The present invention relates to compounds of formula I
wherein A, G, r and R1 to R5 are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prevention of diseases which are associated with the modulation of H3 receptors such as, for example, diabetes mellitus.
The present invention relates to compounds of formula I
wherein A, G, r and R
1
to R
5
are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prevention of diseases which are associated with the modulation of H3 receptors.
Methods for the synthesis of lactams are presented whereby a carboxylic acid of the formula HOOC—OR—NH-LG, wherein OR is an organic moiety and LG is a leaving group, is reacted with an acid, such as an organic acid, in particular a strong acid, and a dehydrating agent, which may be one in the same such as a strong acid anhydride, such that the amount of acid added allows for the desired transformation to take place without the loss of the leaving group (LG) before the cyclization, and recovering the lactam.
本发明提出了合成内酰胺的方法,即将式 HOOC-OR-NH-LG(其中 OR 为有机分子,LG 为离去基团)的羧酸与一种酸(如有机酸,特别是强酸)和一种脱水剂(可以是同一种脱水剂,如强酸酸酐)反应,使加入的酸量能够在环化前发生所需的转化而不损失离去基团(LG),从而回收内酰胺。
TRICYCLIC AMIDE DERIVATIVES USEFUL FOR TREATING OBESITY