Synthesis of Isothiazole via the Rhodium-Catalyzed Transannulation of 1,2,3-Thiadiazoles with Nitriles
作者:Boram Seo、Ya Gob Kim、Phil Ho Lee
DOI:10.1021/acs.orglett.6b02499
日期:2016.10.7
A synthetic method for obtaining a wide variety of isothiazoles by the Rh-catalyzed transannulation of 1,2,3-thiadiazoles with alkyl, aryl, and heteroaryl nitriles, which proceeds via an α-thiavinyl Rh-carbenoid intermediate, was developed. The results suggest that during its reaction with nitriles, the α-thiavinyl carbene acts as an umpolung 1,3-dipole equivalent, in contrast to its behavior during
[EN] COMPOSITIONS AND METHODS FOR DELIVERY OF THERAPEUTIC AGENTS<br/>[FR] COMPOSITIONS ET PROCÉDÉS PERMETTANT D'ADMINISTRER DES AGENTS THÉRAPEUTIQUES
申请人:MODERNATX INC
公开号:WO2017099823A1
公开(公告)日:2017-06-15
This disclosure provides improved lipid-based compositions, including lipid nanoparticle compositions, and methods of use thereof for delivering agents in vivo including nucleic acids and proteins. These compositions are not subject to accelerated blood clearance and they have an improved toxicity profile in vivo.
Use of carotenoids and/or carotenoid derivatives/analogs for reduction/inhibition of certain negative effects of COX inhibitors
申请人:Lockwood Samuel F.
公开号:US20080293679A1
公开(公告)日:2008-11-27
Administering carotenoids, and in particular xanthophyll carotenoids, or analogs or derivatives of astaxanthin, lutein, zeaxanthin, lycoxanthin, lycophyll, or lycopene to a subject undergoing treatment with COX-2 inhibitor drugs may reduce at least a portion of the adverse side effects associated with administration of COX-2 selective inhibitor drugs. The carotenoids, or analogs or derivatives thereof may be administered to a subject prior to, at the same time as, or after the commencement of COX-2 selective inhibitor drug therapy. The carotenoids, or analogs or derivatives thereof may be administered to a subject concurrently with COX-2 selective inhibitor drugs therapy. The carotenoids, or analogs or derivatives thereof may be incorporated into pharmaceutical preparation in combination with the COX-2 selective inhibitor drug or may be administered separately. Administration of the analogs or derivatives described herein may reduce peroxidation of LDL and other lipids in the serum and plasma cell membranes of subjects undergoing COX-2 selective inhibitor drug therapy. Administration of the analogs or derivatives described herein may reduce the incidence of deleterious clinical cardiovascular events undergoing COX-2 selective inhibitor drug therapy.
Rhodium-Catalyzed 1,1-Hydroacylation of Thioacyl Carbenes with Alkynyl Aldehydes and Subsequent Cyclization
作者:Bingnan Zhou、Qiuyue Wu、Ziyang Dong、Jiaxi Xu、Zhanhui Yang
DOI:10.1021/acs.orglett.9b01003
日期:2019.5.17
A rhodium-catalyzed 1,1-hydroacylation of thioacyl carbenes with alkynyl and alkenyl aldehydes and subsequent 6-endo-trig/dig cyclization are realized, giving structurally diverse 4H-thiopyran-4-ones and 2,3-dihydro-4H-thiopyran-4-ones in moderate to good yields. The oxidative addition of Rh(I) to aldehydes is proposed to be the turnover-limiting step. Manipulations of estrones demonstrate the applications
实现了铑的羰基羰基与炔基和烯基醛催化的1,1-氢羰基化反应,随后进行了6-内-trig / dig环化反应,得到了结构上不同的4 H - thiopyran -4-ones和2,3-dihydro-4 H -thiopyran-4-ones,产量中等至良好。提出将Rh(I)氧化成醛是限制营业额的步骤。雌酮的操作证明了我们正式的(3 + 3)转环剂在天然产物的结构修饰中的应用。
The invention relates to novel aminomethyl benzene derivatives, their preparation and their use as pharmaceutically active compounds. Said compounds particularly act as immunomodulating agents. (I) wherein A represents one of the groups (I), (I), (I) and (I).