A. Pande et al., 3-METHYL-5-DECANOYLPYRIDINE AND AMIDES FROM PIPER RETROFRACTUM, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 36(4), 1997, pp. 377-379
Besides piperine, methyl piperate, N-isobutyleicosa2,4-dienamide and b
eta-sitosterol-beta-D-glucapyranoside, two new compounds, 3-methyl-5-d
ecanoylpyridine and 28-methylnonacos-27-en-1-oic acid have been isolat
ed and characterized from Piper retrofractum.