6736-97-6Relevant articles and documents
Further 2R-Benzylmalate derivatives from the undergrounds parts of Arundina graminifolia (Orchidaceae)
Auberon, Florence,Olatunji, Opeyemi Joshua,Waffo-Teguo, Pierre,Makinde, Emmanuel Ayobami,Forstinus Nwabor, Ozioma,Bonté, Frédéric,Mérillon, Jean-Michel,Lobstein, Annelise
, p. 156 - 163 (2019/12/11)
Nine new glucosyloxybenzyl 2R-benzylmalate derivatives, named arundinosides R–Z (1-9) were isolated from the underground parts of Arundina graminifolia. The structures of the new compounds were elucidated by in-depth spectroscopic data analysis including
Novel quercetin glucosides from Helminthostachys zeylanica root and acceleratory activity of melanin biosynthesis
Yamauchi, Kosei,Mitsunaga, Tohru,Batubara, Irmanida
, p. 369 - 374 (2013/09/12)
Two novel quercetin glucosides, namely 4′-O-β-d-glucopyranosyl- quercetin-3-O-β-d-glucopyranosyl-(1→4)-β-d-glucopyranoside (compound 1) and 4′-O-β-d-glucopyranosyl-(1→2)-β-d- glucopyranosyl-quercetin-3-O-β-d-glucopyranosyl-(1→4) -β-d-glucopyranoside (compound 2), were isolated from Helminthostachys zeylanica root 50 % EtOH extract. Structural analysis of isolated compounds was achieved mainly by 600 MHz and 800 MHz NMR, UPLC-TOFMS and GC-MS. Of the two quercetin glucosides, compound 1 showed a high melanogenic acceleratory effect, 2.7 times higher than control, at 10 μM concentration in murine B16 melanoma cells, with no cytotoxic effect.
Triterpenoid saponins from Gynostemma pentaphyllum
Shi, Lin,Cao, Jia-Qing,Shi, Sheng-Ming,Zhao, Yu-Qing
experimental part, p. 168 - 177 (2011/03/23)
Four new dammarane-type triterpene saponins, 1-4, were isolated from the aerial parts of Gynostemma pentaphyllum (Thunb.) Makino. Their structural elucidations were accomplished mainly on the basis of spectroscopic methods, such as IR, HR-TOF-MS, and NMR. Compounds 1-4 showed moderate cytotoxic activities against cancer cell lines HL-60, Colon205, and Du145 in vitro.