Malonylated glycerolipids from the glandular trichome exudate of Ceratotheca triloba.
Chemical investigation of the glandular trichome exudate from Ceratotheca triloba (Pedaliaceae) led to the identification of nine 1-O-acetyl-2-O-[(R)-3-acetyloxy-fatty acyl]-3-O-malonylglycerols. Among these, 1-O-acetyl-2-O-[(R)-3-acetyloxyicosanoyl]-3-O-malonylglycerol (7) was the most abundant constituent (41%), followed by 1-O-acetyl-2-O-[(R)-(3-acetyloxyoctadecanoyl)-3-O-malonylglycerol (2; 21%). Compounds having iso- and anteiso-type structures in the 3-acetyloxy-fatty acyl groups in the fatty acyl moiety were also characterized as minor constituents. This is the first report of the isolation of malonylated glycerolipids as natural products.
Department of Chemistry and Materials Science, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan.
Akiko
A
Ohkawa
Takaomi
T
Sakai
Kiyoshi
K
Ohyama
Yoshinori
Y
Fujimoto
D005227:Fatty Acids / Q000737:chemistry* / Q000302:isolation & purification; D005990:Glycerol / Q000031:analogs & derivatives* / Q000302:isolation & purification; D008314:Malonates / Q000737:chemistry* / Q000302:isolation & purification; D029601:Pedaliaceae / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D013237:Stereoisomerism
D005227:Fatty Acids; D008314:Malonates; D010936:Plant Extracts; D005990:Glycerol