The hydrogenation of .ALPHA.-hydroxymethylene-ketone derivatives to .ALPHA.-hydroxymethyl-ketone derivatives with a cell-free system of Streptomyces cinereocrocatus.
The hydrogenation of .ALPHA.-hydroxymethylene-ketone derivatives to .ALPHA.-hydroxymethyl-ketone derivatives with a cell-free system of Streptomyces cinereocrocatus.
Syntheses and advanced NMR structure determination of androsteno-[17,16-d]-pyrimidine derivatives
作者:Peter Forgo、Irén Vincze
DOI:10.1016/s0039-128x(02)00031-4
日期:2002.8
Reactions of 16-hydroxymethylene- and 16-aminomethylene-3beta-hydroxy-5-androsten-17-one with formamide and guanidine were carried out resulting in the formation of [16,17-d]-pyrimidine rings. Advanced two-dimensional NMR methods were used to investigate the structure of the products. Homonuclear-, and heteronuclear chemical shift correlation experiments yielded the complete H-1-, C-13- and N-15 signal assignment for these compounds. (C) 2002 Elsevier Science Inc. All rights reserved.