116967-26-1Relevant articles and documents
Enzymatic reductions for the regio-and stereoselective synthesis of hydroxy-keto esters and dihydroxy esters
Bariotaki, Anna,Kalaitzakis, Dimitris,Smonou, Ioulia
, p. 1792 - 1795 (2012)
Ketoreductases were utilized for the stereoselective synthesis of δ-hydroxy-β-keto esters, β-hydroxy-δ-keto esters, and β,δ-dihydroxy esters. Seven out of eight possible stereoisomers were obtained from the enzymatic reduction of the corresponding β,δ-diketo ester in high enantio-and diastereomeric excess.
ROSUVASTATIN CALCIUM AND PROCESS FOR PRODUCING INTERMEDIATE THEREOF
-
Paragraph 0408-0411, (2016/12/22)
An object of the present invention is to provide a novel method capable of producing rosuvastatin calcium and intermediates therefor efficiently, inexpensively and with high purity. The present invention provides a method of efficiently producing rosuvastatin calcium and intermediates therefor having a high purity at an industrial scale, without using an extremely low temperature reaction or a special asymmetric catalyst.
A total synthesis of xestodecalactone A and proof of its absolute stereochemistry: Interesting observations on dienophilic control with 1,3-disubstituted nonequivalent allenes
Yoshino, Toshiharu,Ng, Fay,Danishefsky, Samuel J.
, p. 14185 - 14191 (2008/02/10)
A concise total synthesis of xestodecalactone A, utilizing a Diels-Alder strategy is described. The focal Diels-Alder reaction relied on an "ynoate" dienophile to rapidly assemble the required resorcylinic acid scaffold. During this study, Diels-Alder cycloaddition reactions involving 1,3-disubstituted nonequivalent allene dienophiles were studied, and some surprising results were encountered.