7434-12-0Relevant academic research and scientific papers
Antibacterial activity of a triterpenoid saponin from the stems of Caesalpinia pulcherrima Linn.
Asati, Nidhi,Yadava
, p. 499 - 507 (2017/09/30)
A new compound 1 was isolated from the methanolic extract of the stems of the Caesalpinia pulcherrima Linn. along with a reported compound (2) 3-O-β-D-glucopyranosyl-(1→4)-β-D-xylopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl hederagenin 28-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester. The new compound 1 has m.p. 272–274°C, m.f. C46H74O17, [M]+ m/z 898. It was characterised as 3-O-β-D-glucopyranosyl-(1→4)-α-L-arabinopyranosyl hederagenin 28-O-β-D- xylopyranosyl ester by various colour reactions, chemical degradations and spectral analyses. Antibacterial activity of compound 1 was screened against various Gram-positive and Gram-negative bacteria and showed significant results.
CARBOHYDRATE METHYL ESTERS, X. HYDROGENOLYSIS OF BENZYLIDENE ACETALS. SYNTHESIS OF MONO- AND DI-O-METHYL ETHERS OF L-ARABINOSE
Szurmai, Z.,Liptak, A.,Harangi, J.,Nanasi, P.
, p. 213 - 220 (2007/10/02)
Preparation methods of 2-, 3- and 4-mono-O-methyl-, as well as 2,3-, 2,4- and 3,4-di-O-methyl-L-arabinose are described starting from exo and endo benzyl 3,4-O-benzylidene-β-L-arabinopyranoside, respectively. 1H-NMR and GLC data are presented.
NEM LIGNANS FROM THE HEARTWOOD OF CLEISTANTHUS COLLINUS
Anjaneyulu, A. S. R.,Ramaiah, P. Atchuta,Row, L. Ramachandra,Venkateswarlu, R.,Pelter, A.,Ward, R. S.
, p. 3641 - 3652 (2007/10/02)
The isolation and characterisation of five new compounds and nine known compounds from the heartwood of Cleistanthus collinus are reported.The new compounds are wodeshiol 16, 3,4-dihydrotaiwanin C 20, and three new glycosides 24, 25 and 26 of diphyllin and taiwanin E.The 1H and 13C NMR spectra of these compounds are also reported.
