We present herein the first oxidation of enynylboronates for the synthesis of γ-lactones, including spiro-, and fused-butanolides as well as butenolides that are prevalent in nature products and bioactive molecules. The asymmetric version of this oxidation was also achieved in the presence of chiral ketone and Oxone. This process successively involves the oxidation of C(sp)−B bond, the epoxidation
A synthetically benign deuterium atom transfer (DAT) deuteration of electron-deficient alkenes has been achieved. This DAT protocol realized higher functional group (FG) tolerance and chemoselectivity than the existing method, and allowed access to complex deuterated compounds including a heavy drug and deuterium-labeled amino acids.
已经实现了缺电子烯烃的合成良性氘原子转移 (DAT) 氘化。该 DAT 协议实现了比现有方法更高的官能团 (FG) 耐受性和化学选择性,并允许获得复杂的氘化化合物,包括重药物和氘标记的氨基酸。
Claisen, Chemische Berichte, 1890, vol. 23, p. 977
作者:Claisen
DOI:——
日期:——
IMPROVED HORNER-WADSWORTH-EMMONS PREPARATION OF α-METHYL- OR α-ETHYL-α,β-UNSATURATED ESTERS FROM ALDEHYDES
作者:Richard J. Petroski、David Weisleder
DOI:10.1081/scc-100000184
日期:2001.1
The E-isomer selectivity of the Horner-Wadsworth-Emmons olefination of aldehydes to form alpha -methyl- or alpha -ethyl-alpha,beta -unsaturated esters has been improved by using lithium tert-butoxide as the base, triethyl-2-phosphonopropionate or triethyl-2-phosphonobutyrate as the phosphonate, an aldehyde, and hexane as the reaction solvent. Greater E-isomer selectivity was observed in the formation of alpha -methyl-alpha,beta -unsaturated esters than alpha -ethyl-alpha,beta -unsaturated esters. These compounds are useful intermediates for the synthesis of insect pheromones and natural products.
INHIBITORS OF MPTP
申请人:[en]NRG THERAPEUTICS LTD
公开号:WO2024153946A1
公开(公告)日:2024-07-25
The invention relates to compounds of formula (I), and related aspects.