Methyl chanofruticosinates from leaves of Kopsia flavida Blume.
Three new indole alkaloids with methyl chanofruticosinates skeletal system, viz., methyl 12-methoxy-N1-decarbomethoxychanofruticosinate, methyl 12-methoxychanofruticosinate and methyl 11,12-dimethoxychanofruticosinate, in addition to methyl 11,12-methylenedioxy-N1-decarbomethoxychanofruticosinate, have been isolated from the leaves of Kopsia flavida Blume. The structures of these three new indole alkaloids were assigned by NMR spectral data using various 2D-techniques.
Husain
K
K
Department of Pharmacy, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur. khairana@medic.ukm.my
Jantan
I
I
Kamaruddin
N
N
Said
I M
IM
Aimi
N
N
Takayama
H
H
D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification*; D001685:Biological Factors / Q000737:chemistry / Q000302:isolation & purification; D007211:Indoles / Q000737:chemistry*; D019684:Magnoliopsida / Q000737:chemistry*; D008296:Malaysia; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry
D000470:Alkaloids; D001685:Biological Factors; D007211:Indoles