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1. (Article ID: 9996)
 
Yamauchi T, Abe F
Cardiac glycosides and pregnanes from Adenium obesum (studies on the constituents of Adenium. I)
Chemical and Pharmaceutical Bulletin 38(3) (1990) 669-672
 

Cardiac glycosides and pregnanes from the roots and the stems of Adenium obesum ROEM. et SCHULT. were investigated. Among 30 cardiac glycosides including 15 known glycosides and 15 new combinations of the known aglycones and sugars, the structures of 11 glycosides were elucidated. Oleandrigenin β-gentiobiosyl-β-thevetoside was the main glycoside. Neridienone A and 16,17-dihydroneridienone A, common pregnanes in Apocynaceae, were also isolated.

Adenium obesum, Apocynaceae, cardiac glycoside, D-thevetoside, obeside, obebioside, obetrioside, pregnane, neridienone A

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2. (Article ID: 10212)
 
Yamauchi T, Abe F
2'-O-acetates of obeside B, honghelin, and obebiosides A and B from Adenium obesum (studies on the constituents of Adenium II)
Chemical and Pharmaceutical Bulletin 38 (1990) 1140-1142
 

2'-O-Acetyl-β-D-thevetosides and β-D-glucosyl(1→4)-2'-O-acetyl-β-D-thevetosides of oleandrigenin and digitoxigenin were isolated along with D-cymarosides, D-thevetosides and D-digitalosides from the roots and the stems of Adenium obesum ROEM. et SCHULT. 4-O-β-D-Glucopyranosyl-D-cymaritol was isolated from the polar fraction.

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