A new type of glycolipid, 1-[alpha-mannopyranosyl-(1 alpha-3)-(6-O-acyl-alpha-mannopyranosyl)]-3-O-acylglycerol, from Arthrobacter atrocyaneus

被引：17
|
作者：
Niepel, T
Meyer, H
Wray, V
Abraham, WR
机构：
[1] GESELL BIOTECHNOL FORSCH MBH, DEPT MICROBIOL, D-38124 BRAUNSCHWEIG, GERMANY
[2] GESELL BIOTECHNOL FORSCH MBH, INSTRUMENTAL ANALYL GRP, D-38124 BRAUNSCHWEIG, GERMANY
来源：
TETRAHEDRON | 1997年 / 53卷 / 10期
关键词：
D O I：
10.1016/S0040-4020(97)00079-3
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The polar lipids from the bacterium Arthrobacter atrocyaneus LMG 3814T were analyzed and a novel type of glycolipid isolated. Its structure was elucidated by the combination of different NMR techniques and FAB-MS/MS in the positive and negative modes. The glycolipid was identified as 1-[alpha-mannopyranosyl-(1 alpha-3)-(6-O-acyl-alpha-mannopyranosyl)]-3-O-acylglycerol. The main compound had 14-methyl-hexadecanoic acid at the glycerol moiety and 12-methyl-tetradecanoic acid at C-6 of the inner mannose unit. Additionally six minor compounds were also identified with different Fatty acids. Under (+)-FAB ionization dominant daughter ions were observed through neutral loss of hydrocarbons generated from the acyl fatty acids. Negative-ion MS/MS allowed the identification of the phospholipids which consisted of five phosphatidylglycerols and seven cardiolipins. (C) 1997 Elsevier Science Ltd.
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页码：3593 / 3602
页数：10
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