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Ñ̲ÝС²Ë¶ê(½ð±Ò+1): 2011-01-27 13:05:39
1,1,1-trifluoro-2-phenylbut-3-yn-1-yl acetate£¨1£¬1£¬1-Èý·ú-2-±½»ù¶¡-3-Ȳ-1-´¼ÒÒËáõ¥£©Ó¦¸ÃÓÐÎ󣬲»¿ÉÄÜ1-CÉÏÁ¬5¸ö»ùÍÅ£¨CΪÎå¼ÛÁË£©£¬Ó¦¸ÃΪ£º1,1,1-trifluoro-2-phenylbut-3-yn-2-yl acetate£¨1£¬1£¬1-Èý·ú-2-±½»ù¶¡-3-Ȳ-2-´¼ÒÒËáõ¥£©¡£Ò»ÆªÏà¹ØÎÄÏ×ÈçÏ£º
Identification of a metagenome-derived esterase with high enantioselectivity in the kinetic resolution of arylaliphatic tertiary alcohols
Robert Kourist, Sajja Hari Krishna, Jesal S. Patel, Flash Bartnek, Timothy S. Hitchman, David P. Weiner and Uwe T. Bornscheuer
Org. Biomol. Chem., 2007, 5, 3310-3313
Abstract
35 metagenome-derived esterases bearing a GGG(A)X motif were screened for activity and enantioselectivity in the hydrolysis of a range of tertiary alcohol acetates. Most of the active esterases showed little or no enantioselectivity in the hydrolysis of the terpinyl acetate, linalyl acetate and 3-methylpent-1-yn-3-yl acetate. However, one esterase showed excellent enantioselectivity (E > 100) in the kinetic resolution of 1,1,1-trifluoro-2-phenylbut-3-yn-2-yl acetate as confirmed by a preparative scale reaction.
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