N-(3-巯基丙酰基)-N-芳基甘氨酸(14a-x),-N-芳基丙氨酸(15a,b),-N-环烷基甘氨酸(16a-k)和-1,2,3,4-的合成描述了四氢异喹啉-3-羧酸(17a-d),-1,2,3,4-四氢喹啉-2-羧酸(18a-f)和-二氢吲哚-2-羧酸(19a-k)。报道了每种化合物对血管紧张素转化酶(ACE)的体外抑制作用,并讨论了每个系列的结构-活性关系。讨论了ACE的体内抑制作用和各系列代表性化合物的降压作用。最有效的化合物19d的体外ACE IC50为2.6 X 10(-9)M,并且以10 mg / kg po的剂量在85 mm的自发性高血压大鼠中降低了血压。
N-(3-巯基丙酰基)-N-芳基甘氨酸(14a-x),-N-芳基丙氨酸(15a,b),-N-环烷基甘氨酸(16a-k)和-1,2,3,4-的合成描述了四氢异喹啉-3-羧酸(17a-d),-1,2,3,4-四氢喹啉-2-羧酸(18a-f)和-二氢吲哚-2-羧酸(19a-k)。报道了每种化合物对血管紧张素转化酶(ACE)的体外抑制作用,并讨论了每个系列的结构-活性关系。讨论了ACE的体内抑制作用和各系列代表性化合物的降压作用。最有效的化合物19d的体外ACE IC50为2.6 X 10(-9)M,并且以10 mg / kg po的剂量在85 mm的自发性高血压大鼠中降低了血压。
An unprecedented α‐allylation of amines was achieved by combining palladium catalysis and visible‐light photoredox catalysis. In this dual catalysis process, the catalytic generation of allyl radical from the corresponding π‐allylpalladium intermediate was achieved without additional metal reducing reagents (redox‐neutral). Various allylation products of amines were obtained in high yields through
Compounds of the formula ##STR1## wherein R and R.sub.9 are independently hydroxy or lower alkoxy, R.sub.1 and R.sub.2 are hydrogen or lower alkyl, aryl-lower alkyl having from 7 to 12 carbon atoms, or heterocyclic-lower alkyl having from 6 to 12 carbon atoms, R.sub.3, R.sub.4, R.sub.5, R.sub.7 and R.sub.8 are hygrogen or lower alkyl, R.sub.6 is cycloalkly having from 3 to 20 carbon atoms, aryl or aryl-lower alkyl, and the aryl group contains from 6 to 10 carbon atoms, and their pharmaceutically acceptable, nontoxic acid addition salts and where R or R.sub.9 or both are hydroxy, their pharmaceutically acceptable, nontoxic basic salts possess antihypertensive activity.
A visible‐light‐induced photocatalytic aerobic oxidation/[3+2] cycloaddition/aromatization cascade between secondary amines and isocyanides has been successfully developed. The reaction provides a general and efficient access to diversely substituted imidazoles and imidazo[1,5‐a]quinoxalin‐4(5 H)‐ones in good yields under mild conditions.
仲胺和异氰酸酯之间的可见光诱导的光催化需氧氧化/ [3 + 2]环加成/芳构化级联反应已成功开发。该反应可在温和条件下以高收率普遍有效地获得各种取代的咪唑和咪唑并[1,5 - a ]喹喔啉-4(5 H)-酮。
Metal‐Free Electrochemical [3+2] Cycloaddition between <i>α</i>‐Amino Carbonyls and Tosylmethyl Isocyanide <i>en route</i> to Substituted Imidazoles
作者:Samrat Mallick、Mrinmay Baidya、Suman De Sarkar
DOI:10.1002/adsc.202301071
日期:2024.1.30
essential requirement of transition metal catalysts and chemical oxidants. A wide variety of different functionalities are well tolerated under this reaction condition, contributing to the substrate scope and applicability. Several control experiments and cyclic voltammetry studies suggest an electro-oxidation triggered successive C−C and C−Nbondformations followed by rapid aromatization for constructing