Accession Number:

AD0710040

Title:

LOCATION OF ACYL GROUPS ON TWO PARTLY ACYLATED GLYCOLIPIDS FROM STRAINS OF USTILAGO (SMUT FUNGI),

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA SASKATOON (SASKATCHEWAN) PRAIRIE REGIONAL LAB

Report Date:

1969-09-29

Pagination or Media Count:

12.0

Abstract:

Partly acylated ustilagic acids 8 from Ustilago maydis DC Corda U. zeae Unger PRL-119, consisting of partially esterified beta-cellobiosyl residues glucosidically linked to long-chain, hydroxylated fatty acids, and a mixture of partially acylated derivatives of 4-O-beta-D-mannopyranosyl-D-erythritol from Ustilago sp. probably U. nuda Jens. Rostr. U. tritici Pers. Rostr. PRL-627 were acetalated with methyl vinyl ether, deacylated, and methylated. Vigorous acid hydrolysis of a methylated 8 gave 2- and 6-O-methyl-D-glucose 119 molar ratio corresponding to 2- and 6-O-acyl substitution of the cellobiose residue. Graded acid hydrolysis of methylated 8 gave an O-methyl derivative 9 which yielded, on Smith degradation, glycerol and 4-O-methyl-D-erythritol. Comparison of the p.m.r. spectra of 8 and the product of its oxidation by lead tetraacetate suggested C-6 and C-2 as the locations of the acetate and hydroxy acid ester-groups, respectively. Author

Subject Categories:

  • Biochemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE