Biomedical subjects

Xiao-Tian Liang

Publications and source records attributed to Xiao-Tian Liang.

4 recordsLinked to original sources

PubMed2003

The synthesis of gracillin and dioscin: two typical representatives of spirostanol glycosides.

Two representative spirostanol saponins that have the typical structure for the sugar moiety, diosgenyl alpha-L-rhamnopyranosyl-(1-->2)-[beta-D-glucopyranosyl-(1-->3)]-beta-D-glucopyranoside (gracillin) and diosgenyl alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside (dioscin), were easily synthesized by a general approach. A procedure using guanidine for the selective deblocking of acetyl while retaining benzoyl protecting groups is described.

Acetylation↗

PubMed2003

Study of stereoselective synthesis of (+/-)-neocnidilide.

Neocnidilide 1, isolated from Apium graveleues L (Umbelliferae), has shown activity to inhibit the growth of mycotoxin-producing fungi. An efficient method for the synthesis of the racemic neocnidilide by the stereoselective reaction of hemiacetal 6 with n-BuMgBr has been developed.

Benzofurans↗

PubMed2002

C20-diterpenoid alkaloids.

Explore the source record for details and available documents.

Alkaloids↗

PubMed2002

A novel steroid from Tylophora atrofolliculata Metc.

A novel steroid, tylophoriside A, was isolated from Tylophora atrofolliculata Metc. The structure was elucidated on the basis of spectroscopic methods and X-ray diffraction.

Humans↗