Novel Glycerolipids and Glycolipids from the Surface Lipids ofNicotiana benthamiana

Bioscience, Biotechnology, and Biochemistry
1992.0

Abstract

The surface lipids of Nicotiana benthamiana contained novel glycerolipids and several varieties of glycolipids. As glycerolipids, the triacylglycerol, 1,3-diacylglycerol, and 1,2-diacylglycerol types of glycerolipids were isolated and identified. Each lipid contained acetyl, 16-methylheptadecanoyl, and 18-methylnonadecanoyl moieties. The acetylated position of each lipid was determined by 2D-NMR, using the HMBC technique. The structures were 1,3-di-O-acetyl-2-0-acylglycerol, 1-0-acetyl-3-0-acylglycerol, and 1-0-acetyl-2-0-acylglycerol. As glycolipids, one glucose ester and four types of sucrose esters were isolated and identified. These glycolipids contained acetic acid and such branched short-chain fatty acids as 5-methylhexanoic, 4-methylhexanoic, 6-methylheptanoic, and 5-methylheptanoic acids. The structure of the glucose ester was 3,4-di-O-acyl-iX-o-glucopyranose. The structures of the sucrose esters were 6-0-acetyl-4-0-acyl-iX-o-glucopyranosyl-(3-0-acyl)-fJ-o-fructofuranoside, 4-0-acyl-iX-o-glucopyranosyl-(3- O-acyl)-fJ-o-fructofuranoside, 3,4-di-O-acyl-iX-o-glucopyranosyl-fJ-o-fructofuranoside, and 6-0-acetyl-iXo-glucopyranosyl-fJ-o-fructofuranoside.

Knowledge Graph

Similar Paper