Two new C(13) nor-isoprenoids from the leaves of Casearia sylvestris.
Two new C(13) nor-isoprene glycosides, (6S,9S)-6,9-dihydroxymegastiman-4-en-9-O-beta-D-glucopyranoside (1) and (6S,9S)-6,9-dihydroxymegastiman-4-en-9-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (2) were isolated from the leaves of Casearia sylvestris, along with icariside B(5) (3), byzantionoside B (4), blumenol B (5), blumenol C (6) and loliolide (7). The structures of these compounds were determined on the basis of 1D and 2D NMR, MS and circular dichroism (CD) spectroscopic analyses, chemical methods and comparison with the literature data.
Wang
Wei
W
National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, University of Mississippi, MS 38677, U.S.A.
Li
Xing-Cong
XC
Ali
Zulfiqar
Z
Khan
Ikhlas Ahmed
IA
D001938:Brazil; D002236:Carbohydrate Conformation; D037821:Casearia / Q000737:chemistry*; D002849:Chromatography, Gas; D002942:Circular Dichroism; D005960:Glucosides / Q000737:chemistry*; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D018515:Plant Leaves / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
C541715:(6S,9S)-6,9-dihydroxymegastiman-4-en-9-O-beta-D-apiofuranosyl-(1-6)-beta-D-glucopyranoside; C541714:(6S,9S)-6,9-dihydroxymegastiman-4-en-9-O-beta-D-glucopyranoside; D005960:Glucosides; D013729:Terpenes