Site-Selective Mono-Oxidation of 1,2-Bis(boronates)
作者:Lu Yan、James P. Morken
DOI:10.1021/acs.orglett.9b01204
日期:2019.5.17
Site-selective oxidation of vicinal bis(boronates) is accomplished through the use of trimethylamineN-oxide in 1-butanol solvent. The reaction occurs with good efficiency and selectivity across a range of substrates, providing 2-hydro-1-boronic esters which are shown to be versatile intermediates in the synthesis of chiral building blocks.
Organocatalytic Approach to (<i>S</i>)-1-Arylpropan-2-ols: Enantioselective Synthesis of the Key Intermediate of Antiepileptic Agent (−)-Talampanel
作者:Rajiv T. Sawant、Suresh B. Waghmode
DOI:10.1080/00397910903221753
日期:2010.7.12
An efficient organocatalytic route for the preparation of enantioselectivesynthesis of (S)-1-arylpropan-2-ols derivatives, including the key intermediate of antiepileptic agent (−)-talampanel is described. The key steps involved are L-proline-catalyzed asymmetric α-aminooxylation of aldehydes and regioselective tosylation of diols followed by reduction.
DEPSIPEPTIDE DERIVATIVE, PRODUCTION THEREOF AND USE THEREOF
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0634408A1
公开(公告)日:1995-01-18
A compound represented by general formula (I) or a salt thereof, excellent in parasiticidal activity as an enthelmintic for animal and man, wherein A represents benzyl which is appropriately substituted or phenyl which may be appropriately substituted; Aa represents benzyl or phenyl each of which may be appropriately substituted; B and D represent each lower alkyl; and C represents hydrogen or lower alkyl.
通式(I)所代表的化合物或其盐,作为动物和人的驱虫药,具有优异的杀寄生虫活性,其中 A 代表被适当取代的苄基或可被适当取代的苯基;Aa 代表苄基或苯基,其中每个都可被适当取代;B 和 D 分别代表低级烷基;C 代表氢或低级烷基。
作者:Lu Yan、Yan Meng、Fredrik Haeffner、Robert M. Leon、Michael P. Crockett、James P. Morken
DOI:10.1021/jacs.7b12316
日期:2018.3.14
A mechanistic investigation of the carbohydrate/DBU cocatalyzed enantioselective diboration of alkenes is presented. These studies provide an understanding of the origin of stereoselectivity and also reveal a strategy for enhancing reactivity and broadening the substrate scope.
Mohan, H. Rama; Rao, A. S., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1998, vol. 37, # 1, p. 78 - 79