Nan-Jun Sun

Araticulin, a bis-tetrahydrofuran polyketide from Annona itcrassiflora seeds

A new tetrahydroxy adjacent bis-tetrahydrofuran polyketide, araticulin, has been isolated from the cytotoxic ethanolic extract of Annona crassiflora seeds. Its structure was established by NMR and mass spectrometry as a threo-trans-threo-trans-threo isomer of purpureacin-2, the only previously known bis-tetrahydrofuran polyketide bearing an OH group at C-12.

New Cytotoxic Fatty Acid from Desmos cochinchinensis (Annonaceae)

Abstract Desmosic acid, a novel cytotoxic fatty acid, was isolated from Desmos cochinchinensis Lour. (Annonaceae). Its structure was established by spectroscopic and chemical methods.

New Cytotoxic Cycloartane Triterpenoids From Desmos Cochinchinensis (Annonaceae)

Abstract Desmosinol, a novel cycloartane triterpenoid was isolated from the stem of Desmos cochinchinensis Lour. (Annonaceae). Its structure was established by spectroscopic methods.