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Triterpenoid oligoglycosides from the sea cucumber Stichopus parvimensis
Ana María de Moncerrat Iñiguez-Martinez1, Graciela Guerra-Rivas, Tirso Rios
1Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, Campus Ensenada, Carretera Tijuana-Ensenada Km. 103, Ensenada, Baja California, México.
Abstract:
Two new holostan-type triterpenoid oligoglycosides, named parvimosides A (1) and B (2), were isolated from the warty sea cucumber Stichopus parvimensis (syn. Parastichopus parvimensis). Their structures and total assignments of the proton and carbon signals were established on the basis of spectral evidence, mainly 1H and 13C 1D and 2D NMR spectroscopy including DEPT, COSY, TOCSY, NOESY/ROESY, HMQC/HSQC, and HMBC experiments, as well as FABMS.
