To study the chemical constituents in Bletilla ochracea Schltr. , repeated column chromatographies and preparative TLC were used for the isolation of compounds, and spectroscopic techniques (NMR, IR, UV and MS) were...
eported here is identification of a 7-en-sterol and a 5-en-sterol which containsa cyclopropane ring in its side chain and is separated from the South China Seasponge Biemna sp. . This leads to the isolation and identi...
Supported by the National Natural Science Foundation of China;the Doctoral Programme from State Education Commission of China
Sterols are essential components of all eukaryotic cells and were the first group of marine sponge natural products used in the taxonomic characterization of marine sponges. Thus, in the past decade there has been an ...