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Monoacylation of 2-O-α-D-glucopyranosyl-L-ascorbic acid by protease in N,N-dimethylformamide with low water content
被引:6
|作者:
Tai, Akihiro
[1
]
Mori, Tasuku
[1
]
Kimura, Yuka
[2
]
Ito, Hideyuki
[2
]
机构:
[1] Prefectural Univ Hiroshima, Fac Life & Environm Sci, Hiroshima 7270023, Japan
[2] Okayama Univ, Div Pharmaceut Sci, Grad Sch Med Dent & Pharmaceut Sci, Okayama 7008530, Japan
关键词:
Protease;
Transacylation;
2-O-alpha-D-Glucopyranosyl-L-ascorbic acid;
Vinyl laurate;
N;
N-Dimethylformamide;
Water;
L-ASCORBIC-ACID;
CATALYZED REGIOSELECTIVE ESTERIFICATION;
BRANCHED-ACYL CHAIN;
6-O-ACYL-2-O-ALPHA-D-GLUCOPYRANOSYL-L-ASCORBIC ACIDS;
COLLAGEN-SYNTHESIS;
ALPHA-GLUCOSIDE;
LIPASE;
SUCROSE;
TRANSGLUCOSYLATION;
2-GLUCOSIDE;
D O I:
10.1016/j.carres.2010.04.028
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
2-O-alpha-D-Glucopyranosyl-L-ascorbic acid (AA-2G) laurate was synthesized from AA-2G and vinyl laurate with a protease from Bacillus subtilis in N,N-dimethylformamide (DMF) with low water content. Addition of water to DMF dramatically enhanced monoacyl AA-2G synthesis. Maximum synthetic activity was observed when 3% (v/v) water was added to the reaction medium. Under the optimal reaction conditions, 5-O-dodecanoyl-2-O-alpha-D-glucopyranosyl-L-ascorbic acid, 2-O-(6'-O-dodecanoyl-alpha-D-glucopyranosyl)-L-ascorbic acid, and 6-O-dodecanoyl-2-O-alpha-D-glucopyranosyl-L-ascorbic acid were synthesized in yields of 5.5%, 3.2%, and 20.4%, respectively. (C) 2010 Elsevier Ltd. All rights reserved.
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页码:1658 / 1662
页数:5
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