Stereoselective, Ag-Catalyzed Cyclizations To Access Polysubstituted Pyran Ring Systems: Synthesis of C<sub>1</sub>–C<sub>12</sub> Subunit of Madeirolide A
作者:Kazuhiro Watanabe、Jinming Li、Nagarathanam Veerasamy、Ankan Ghosh、Rich G. Carter
DOI:10.1021/acs.orglett.6b00414
日期:2016.4.15
into the scope of a silver-catalyzed cyclization (AgCC) of propargyl benzoates for accessing pyran ring systems has been reported. The impact of the degree of substitution, nature of the substitution on the carbon backbone/benzoate moiety, and stereochemistry has been evaluated. The application of this methodology to the synthesis of the C1–C12 southern fragment of madeirolide A is disclosed.
The effect of catechin derivatives on the enantioselectivity of lipase-catalyzed hydrolyses of alkynol benzoate esters
作者:Kaoru Nakamura、Keishi Takenaka
DOI:10.1016/s0957-4166(02)00121-0
日期:2002.3
Polyphenols. such as (+)-catechin and pyrogallol could be used to enhance stereochemical control in the lipase-catalyzed hydrolysis of alkynol benzoate esters, leading to increased enantioselectivities in the kinetic resolution of alkynols with lipase, Amano AH. (C) 2002 Elsevier Science Ltd. All rights reserved.
Truchet, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1933, vol. 196, p. 707