CRUDE DRUGS FROM AQUATIC PLANTS - VII - 4 NEW THIASPIRANE SULFOXIDE TYPE NUPHAR ALKALOIDS, NUPHARPUMILAMINE-A, NUPHARPUMILAMINE-B, NUPHARPUMILAMINE-C, AND NUPHARPUMILAMINE-D, FROM CHINESE NUPHARIS RHIZOMA, THERHIZOMA OF NUPHAR PUMILUM (TIMM.) DC. (NYMPHACEAE)
M. Yoshikawa et al., CRUDE DRUGS FROM AQUATIC PLANTS - VII - 4 NEW THIASPIRANE SULFOXIDE TYPE NUPHAR ALKALOIDS, NUPHARPUMILAMINE-A, NUPHARPUMILAMINE-B, NUPHARPUMILAMINE-C, AND NUPHARPUMILAMINE-D, FROM CHINESE NUPHARIS RHIZOMA, THERHIZOMA OF NUPHAR PUMILUM (TIMM.) DC. (NYMPHACEAE), Heterocycles, 46, 1997, pp. 301-308
Following the characterization of thiohemiaminal type nuphar alkaloids
with immunosuppressive activity, four new thiaspirane sulfoxide type
dimeric sesquiterpene alkaloids, nupharpumilamines A, B, C, and D, wer
e isolated from Chinese Nupharis Rhizoma, the dried rhizoma of Nuphar
pumilum (TIMM.) DC. The structures of nupharpumilamines A, B, C, and D
were determined on the basis of chemical and physicochemical evidence
.