The Synthesis of Deoxyaspergillic Acid and Tetrahydrodeoxyaspergillic Acid
作者:Yasuhiro Chigira、Mitsuo Masaki、Masaki Ohta
DOI:10.1246/bcsj.39.1014
日期:1966.5
Deoxyaspergillicacid (I) and tetrahydrodeoxyaspergillic acid (II) were synthesized. 1-Chloro-3-methyl-2-pentanone was directly oximinated with hydroxylamine, and then the oxime was treated with L-leucine ethyl ester to yield N-(3-methyl-2-oximinopentyl)-L-leucine ethyl ester (III), which, on alkali-hydrolysis, followed by acid-hydrolysis, gave N-(3-methyl-2-oxopentyl)-l-leucine (IV). The treatment