Rhodium catalyzed 2‐alkyl‐benzimidazoles synthesis from benzene‐1,2‐diamines and tertiary alkylamines as alkylating agents
作者:Yamini、Saurabh Sharma、Pralay Das
DOI:10.1002/aoc.6278
日期:2021.8
synthesized from benzene-1,2-diamine and tertiary amines as alkylating agent under polystyrene supported rhodium (Rh@PS) nanoparticles (NPs) catalyzed conditions. The heterogeneous rhodium catalyst was applied first time for the synthesis of 2-alkyl-benzimidazoles. The reaction followed through oxidation of alkylamines, transamination, and oxidativecyclisation with benzene-1,2-diamines for the corresponding
Substituted benzimidazoles and quinazolines as antihypertensives
申请人:American Home Products Corporation
公开号:US05283242A1
公开(公告)日:1994-02-01
There are disclosed compounds of the formula ##STR1## wherein R.sup.1 is ##STR2## R.sup.2 is ##STR3## wherein X is ##STR4## wherein R.sup.5 is hydrogen, alkyl of 1-6 carbon atoms, benzyl, triphenylmethyl, or Sn(alkyl of 1-6 carbon atoms).sub.3 ; n is 1 to 3; Y is ##STR5## wherein R.sup.3 is hydrogen, perfluoro alkyl of 1-6 carbon atoms, trifluoromethylalkyl of 1-6 carbon atoms, or alkyl of 1-6 carbon atoms; and R.sup.4 is hydrogen or alkyl of 1-6 carbon atoms; with the proviso that when R.sup.1 is ##STR6## then R.sup.2 cannot be ##STR7## wherein X is as defined above; and the pharmaceutically acceptable salts thereof, which by virtue of their ability to antagonize angiotensin II are useful for the treatment of hypertension and congestive heart-failure.
Development of Dihydrodibenzooxepine Peroxisome Proliferator-Activated Receptor (PPAR) Gamma Ligands of a Novel Binding Mode as Anticancer Agents: Effective Mimicry of Chiral Structures by Olefinic <i>E</i>/<i>Z</i>-Isomers
conformational restriction by the methyl group at the chiral center. On the basis of this analysis, scaffold hopping of dibenzoazepine into dibenzo[b,e]oxepine by replacing the chiral structures with the corresponding olefinic E/Z isomers was performed. Consequently, dibenzo[b,e]oxepine scaffold 9 was developed showing extremely potent PPARγ reporter activity (EC50 = 2.4 nM, efficacy = 9.5%) as well as diff
A tricyclic compound represented by the following formula (I): ##STR1## wherein R.sup.1 represents hydrogen, halogen or lower alkyl; A represents cyano, carboxyl, tetrazolyl, cyano-substituted phenyl, carboxyl-substituted phenyl or tetrazolyl-substituted phenyl; V represents --(CH.sub.2).sub.m -- wherein m is an integer of 0 to 2; W represents ##STR2## and Q.sup.1 --Q.sup.2 --Q.sup.3 --Q.sup.4 represents N.dbd.CH--CH.dbd.CH, CH.dbd.CH--CH.dbd.CH or CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2, ##STR3## and Q represents N or CH; X.sup.1 --X.sup.2 --X.sup.3 represents CH.dbd.CH--CH.dbd.CH, S--CH.dbd.CH or CH.dbd.CH--S; Y represents CH.sub.2 CH.sub.2 ; and Z.sup.1 --Z.sup.2 represents N--(CH.sub.2).sub.n -- wherein n is an integer of 1 to 3 or a pharmaceutically acceptable salt thereof.
The indolyl-substituted phenylacetic acid derivatives are prepared by reacting the corresponding phenylacetic acids with the required amines. The indolyl-substituted phenylacetic acid derivatives are suitable as active compounds in medicaments, in particular in antiarteriosclerotic medicaments.