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A novel eleven-membered-ring triterpene dilactone, pseudolarolide F and A related compound, pseudolarolide E, from
1State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science.
Journal of Asian Natural Products Research
|January 11, 2002
Abstract:
A novel eleven-membered-ring triterpene dilactone, pseudolarolide F (1), and a related compound, pseudolarolide E (2), were isolated from the seeds of Pseudolarix kaempferi, a plant indigenous to eastern China. Their structures and stereochemistry were established by spectroscopic studies, which included UV, IR, HREIMS, 2D NMR correlation methods (1H-1H COSY, 13C-H COSY, NOESY, HMQC, and HMBC), and single-crystal X-ray analysis.