The facile synthesis of a series of tryptophan derivatives
作者:Georg Blaser、John M. Sanderson、Andrei S. Batsanov、Judith A.K. Howard
DOI:10.1016/j.tetlet.2008.02.120
日期:2008.4
of 5- and 6-substituted tryptophan derivatives that are difficult to prepare using alternative enzymatic approaches. Acylation of an activated amino acid, derived from serine in situ, is coupled with an enzymatic resolution step to furnish enantiopure analogues bearing a range of electron withdrawing and releasing substituents. Isolation of a dehydroalanine derivative as a by-product from some reactions
Process for preparing optically active tryptophanes
申请人:Ube Industries, Inc.
公开号:US04481362A1
公开(公告)日:1984-11-06
Biochemical optical resolution of DL-tryptophanes in which DL-tryptophane amides are interacted with the culture products, or their treated products, of a microorganism capable of producing amidase is described. L-tryptophane amides in racemic DL-tryptophane amides are asymmetrically hydrolyzed to form optically active L-tryptophanes at a high yield and almost all D-tryptophane amides remain without being subjected to hydrolysis. The resultant D-tryptophane amides are readily hydrolyzed, after separating L-tryptophanes, to form optically active D-tryptophanes at a high yield.
Process for preparing optically active tryptophans
申请人:Ube Industries, Ltd.
公开号:US04497957A1
公开(公告)日:1985-02-05
Biochemical optical resolution of DL-tryptophans in which DL-tryptophan amides are interacted with the culture products, or their treated products, of a microorganism capable of producing amidase is described. L-Tryptophan amides in racemic DL-tryptophan amides are asymmetrically hydrolyzed to form optically active L-tryptophans at a high yield and almost all D-tryptophan amides remain without being subjected to hydrolysis. The resultant D-tryptophan amides are readily hydrolyzed, after separating L-tryptophans, to form optically active D-tryptophans at a high yield.
The present invention is directed to pesticidal compositions comprising indole derivatives. These indole derivatives are especially active against phytopathogenic fungi. Furthermore, the invention relates to the use of indole derivatives for the production of pesticides and the use of the compositions according to the invention as pesticides. The present invention is also directed to a process for producing a pesticidal composition and to pesticidal compositions prepared by this process. In addition, the invention relates to a process for preventing or combating pests and to a process for protecting plants against pests, especially against phytopathogenic fungi. Further, the invention is directed to plants or seeds as well as objects or materials which have been protected against pests by treatment with a composition according to the invention. Further, the invention is directed to a method for identifying a substance having pesticidal activity. Further, the invention is directed to a method of identifying the mode of action of and/or of providing binding proteins for a pesticidal compound of the present invention. Finally, the invention is directed to a method for diagnosing pest infection of a plant and to the use of a pesticidal compound of the present invention as diagnostic markers.
申请人:University of Florida Research Foundation, Incorporated
公开号:US10550079B2
公开(公告)日:2020-02-04
The disclosure relates to the field of fusion proteins. In some aspects, the invention to artificial fusion proteins comprising cytochrome P450 enzymes linked to reductase enzymes and uses thereof. In some aspects, the disclosures relates to compounds produced by artificial cytochrome P450 enzymes.