A new type of carboxypeptidase a inhibitors designed using an imidazole as a zinc coordinating ligand
摘要:
2-(4-Imidazoyl)hydrocinnamic acid (1) and its congeners (2-4) having different length of alkyl chain spacers between the imidazole ring and the a-carbon to the carboxylate of 1 have been designed, synthesized and evaluated as inhibitors for carboxypeptidase A to show that they are competitive inhibitors for the enzyme. Inhibitor 1 was most potent having the K-i value of 0.8 mu M. The present study demonstrates that imidazole ring is an effective zinc coordinating ligand that can be useful for the design of inhibitors for zinc proteases. (C) 1997 Elsevier Science Ltd.
Palladium‐Catalyzed, Chelation‐Assisted Stereo‐ and Regioselective Synthesis of Tetrasubstituted Olefins by Oxidative Heck Arylation
作者:Hyun Seung Lee、Ko Hoon Kim、Sung Hwan Kim、Jae Nyoung Kim
DOI:10.1002/adsc.201200306
日期:2012.9.17
An efficient synthesis of tetrasubstitutedolefins was achieved via a palladium‐catalyzed, chelation‐assisted oxidativeHeckarylation protocol from trisubstituted olefins bearing a tether with a directing group in a completely stereo‐ and regioselective manner. The stereo‐ and regioselectivity as well as excellent yields of tetrasubstitutedolefins originated from the stabilization of a palladium
A general route to the synthesis of indoloazocines using allyl bromides prepared from Morita–Baylis–Hillman adducts
作者:Garima Pandey、Ruchir Kant、Sanjay Batra
DOI:10.1016/j.tetlet.2014.12.124
日期:2015.2
A general approach to the synthesis of (E)-5-(substituted) benzylidene-2,3,4,5-tetrahydro-1H-azocino[5,4-b]indol-6(7H)-ones via intramolecular Friedel Craft’s reaction of allylamines prepared from tryptamine and allylbromides is reported.
通过分子内合成(E)-5-(取代)亚苄基-2,3,4,5-四氢-1 H-偶氮基[5,4 - b ]吲哚-6(7 H)-的一般方法据报道弗里德尔·克拉夫特(Friedel Craft)由色胺和烯丙基溴制备的烯丙胺的反应。
Facile Synthesis of 5-Substituted Arabinofuranosyluracil Derivatives
作者:Hiroaki Sawai、Hidekazu Hayashi、Sumie Sekiguchi
DOI:10.1246/cl.1994.605
日期:1994.3
Arabinoaminooxazoline reacted readily with α-(bromomethyl)acrylate derivatives to afford the corresponding adduct. Potassium tert-butoxide- or sodium methoxide-catalyzed cyclization of the adduct gave 5-substituted 2,2′-anhydroarabinofuranosyluracil derivatives.
Tetrahydropyran derivatives as neurokinin receptor antagonists
申请人:——
公开号:US20040063974A1
公开(公告)日:2004-04-01
The present invention relates compounds of the formula (I):
1
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
and R
8
represent a variety of substituents; and pharmaceutically acceptable salts thereof. The compounds are of particular use in the treatment or prevention of depression, anxiety, pain, inflammation, migraine, emesis or postherpetic neuralgia.
Development of regioselective [2 + 3] cycloaddition reactions of nitrile oxides with alkenes using intramolecular reactions through oxime groups [1]
作者:Nao Umemoto、Ayumi Imayoshi、Kazunori Tsubaki
DOI:10.1016/j.tet.2022.132833
日期:2022.8
oxime group and demonstrated their intramolecular [2 + 3] cycloaddition reactions. The desired cycloadducts were obtained in high yields and as single regioisomers. Furthermore, face-selective cycloaddition reactions were achieved by introducing a stereocenter into the linker moiety, affording the desired cycloadducts with good diastereoselectivity.