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.
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.
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.
