Synthesis and biological evaluation of 1α-hydroxy-25(R and S)-25,26-Epoxy-23-yne vitamin D3 and of 1α,25(R and S),26-Trihydroxy-23-yne vitamin D3
摘要:
The synthesis of both 1 alpha-hydroxy-25(R and S)-25,26-epoxy-23-yne vitamin D-3 and of both 1 alpha,2S(R and S),26-trihydroxy-23-yne vitamin D-3 is described. Biological evaluation includes the study of calcemic effect, receptor binding and cell differentiation. (C) 1997 Published by Elsevier Science Ltd.
A powerful new stereo-controlled method for epoxidation of electrophilic alkenes
作者:Carol Clark、Patricia Hermans、Otto Meth-Cohn、Clive Moore、Heinrich C. Taljaard、Gerda van Vuuren
DOI:10.1039/c39860001378
日期:——
tetrahydrofuran are shown to epoxidise α,β-unsaturated esters and sulphones efficiently in a stereo- and regio-specific manner, while esters of chiral alcohols undergo diastereofacially selective epoxidation.
[EN] PREPARATION OF (METH)ACRYLIC ACID ESTERS<br/>[FR] PRÉPARATION D'ESTERS D'ACIDE (MÉTH)ACRYLIQUE
申请人:EVONIK OPERATIONS GMBH
公开号:WO2020035315A1
公开(公告)日:2020-02-20
The invention relates to a method for preparation of (meth)acrylic acid esters from (meth)acrylic acid anhydrides.
这项发明涉及一种从(甲基)丙烯酸酐制备(甲基)丙烯酸酯的方法。
Enantioenriched Positive Allosteric Modulators Display Distinct Pharmacology at the Dopamine D1 Receptor
作者:Tim J. Fyfe、Peter J. Scammells、J. Robert Lane、Ben Capuano
DOI:10.3390/molecules26133799
日期:——
4-dimethyldihydrofuran-2(3H)-one (d- and l-pantolactone, respectively); (3) Results: We confirm both the racemate and enantiomers of 2 are active and selective for the D1R, but that the respective stereoisomers show a significant difference in their affinity and magnitude of positive allosteric cooperativity with dopamine; (4) Conclusions: These data warrant further investigation of asymmetric syntheses of optically
(1) 背景:通过高通量筛选鉴定了两种一流的外消旋多巴胺 D 1受体 (D 1 R) 正变构调节剂 (PAM) 化学型(1和2)。特别是,由于其对 D 1 R 的选择性和报告缺乏内在活性,化合物2显示出作为开发小分子变构调节剂以改善与某些神经精神疾病状态相关的认知缺陷的起点;(2)方法:在本文中,我们描述的光学异构体的enantioenrichment 2使用从(衍生的手性助剂- [R )-和(小号)-3-羟基-4,4-二甲基二氢呋喃-2( 3H )-酮(分别为d-和l-泛内酯);(3)结果:我们确认两个外消旋体和对映体2是活性和选择性为d 1 R,但是,相应的立体异构体显示出它们的亲合性和与多巴胺正变构协同的幅度的差异显著; (4) 结论:这些数据保证了对2的光学纯类似物的不对称合成的进一步研究,以开发具有优异变构特性的 D 1 R PAM。
Process for making bicalutamide and intermediates thereof
申请人:——
公开号:US20040068135A1
公开(公告)日:2004-04-08
Bicalutamide and/or its intermediates are made by the use of p-fluorobenzenesulfinic acid salt as a reagent.
Bicalutamide及/或其中间体是通过使用对氟苯磺酸盐作为试剂制备的。
A Mild Oxidative Aryl Radical Addition into Alkenes by Aerobic Oxidation of Arylhydrazines
A mild and practical oxyarylation of alkenes by oxidative radical addition has been developed by using aerobic oxidation of hydrazine compounds. The use of a catalytic amount of potassiumferrocyanidetrihydrate (K4[Fe(CN)6]⋅3 H2O) and water accelerated this radical reaction to give peroxides or alcohols from simple alkenes in good yields. The environmentally friendly and economical radical reactions