Synthesis and optimization of 2-pyridin-3-yl-benzo[d][1,3]oxazin-4-one based inhibitors of human neutrophil elastase
摘要:
The hit-to-lead optimization of the HNE inhibitor 5-methyl-2-(2-phenoxy-pyridin-3-yl)-benzo[d][1,3]oxazin-4-one is described. A structure-activity relationship study that focused on the 5 and 7 benzoxazinone positions yielded the optimized 5-ethyl-7-methoxy-benzo[d][1,3]oxazin-4-one core structure. 2-[2-(4Methyl-piperazin-1-yl)-pyridin-3-yl] derivatives of this core were shown to yield HNE inhibitors of similar potency with significantly different stabilities in rat plasma. (C) 2009 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.bmcl.2009.06.053
作为产物:
描述:
N-羟乙基哌嗪 、 2-氯烟酸 以
1,4-二氧六环 为溶剂,
反应 18.0h,
以Grams 3.9 of 2-[4-(2-hydroxyethyl)piperazin-1-yl]nicotinic acid, melting at 148°-171° C. (with decomposition), were obtained的产率得到2-[4-(2-hydroxyethyl)piperazin-1-yl]nicotinic acid
参考文献:
名称:
Pharmacologically active alkylol derivatives
摘要:
描述了一种新的烷基醇衍生物,其属于具有结构式 ##STR1## 的类,其中 R 代表从吡啶,嘧啶,吡嗪,吡嗪啉,噻吩,呋喃,噻唑中选择的5或6元杂环环,其可以选择性地被取代为一种或多种从烷基,烷氧基,卤素,酰胺,羟基,甲硫基,三氟甲基,氰基,羧基和相应的烷基酯和碱金属盐所选择的基团;n为2X,X'分别代表氢原子或羟基,但两者都是氢原子的除外,X'可以是羟乙氧基;m为0或1;以及相应的无毒药用可接受的酸加合盐。式I的化合物具有有趣的镇咳活性,并且在其活性剂量下,几乎没有不良副作用。