1H and 13C NMR spectral data of new saponins from Cordia piauhiensis.
Two new bidesmoside triterpenoid saponins were isolated from stems of Cordia piauhiensis. Their structures, characterized as 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucopyranosyl pomolic acid 28-O-beta-D-glucopyranosyl ester (1) and 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester (2), were unequivocally established after extensive NMR (1H, 13C, DEPT 135 degrees, COSY, HSQC, HMBC, TOCSY, and NOESY) studies.
Santos
Renata P
RP
Departamento de Química Orgânica e Inorgânica, Centro de Ciências, Universidade Federal do Ceará, CP 12.200, 60021-970, Fortaleza-CE, Brazil.
Silveira
Edilberto R
ER
Uchôa
Daniel Esdras de A
DE
Pessoa
Otília Deusdênia L
OD
Viana
Francisco Arnaldo
FA
Braz-Filho
Raimundo
R
D002247:Carbon Isotopes; D031213:Cordia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification
D002247:Carbon Isotopes; D012503:Saponins