Two novel bidesmosidic cycloartane-type glycosides, depressosides C and D were isolated from Corchorus depressus L. Their structures were elucidated as (22R)-16β,22-epoxy-3β,26-dihydroxy-9,19-cyclolanost-24E-ene-3,26-di-O-β-D-glucopyranoside and (22R,24S)-22,25-epoxy-3β,16β,24-trihydroxy-9,19-cyclolanostane-3,24-di-O-β-glucopyranoside, respectively on the basis of chemical evidence and detailed spectroscopic studies.
glycoside, Corchorus depressus, Tiliaceae, cyclolanostane, depressoside
NCBI PubMed ID: 11086883Publication DOI: 10.1248/cpb.48.1597Journal NLM ID: 0377775Publisher: Pharmaceutical Society Of Japan
Correspondence: Ahmad VU
Institutions: International Center for Chemical Sciences, HEJ Research Institute of Chemistry University of Karachi, Pakistan
Methods: 13C NMR, 1H NMR, EI-MS, NMR-2D, IR, FAB-MS, TLC, acid hydrolysis, extraction, optical rotation measurement, HPTLC, CC, melting point determination, evaporation, flash chromatography
Found