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US 2014/0275541 A1Published application
Total synthesis of thaxtomin a analogues and their intermediates
AssigneeMarrone Bio Innovations, Inc.
InventorsHuazhang Huang, Dong Yan, Zhijie Xue, Hongbo Zhang
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Abstract
Improved synthetic methods for the production of thaxtomin analogues, particularly thaxtomin A, and intermediates therefore such as substituted tryptophans and in particular, 4-nitro-L-tryptophan, and substituted phenyl acrylic acids are disclosed. Bioassays show that the synthetic thaxtomin A is not significantly different from the natural one in herbicidal activity.
Claims13
A method for the synthesis of a thaxtomin or analog thereof having the structure (I)
- comprising:
- (a) providing a tryptophan amide or analog thereof analog
- (b) providing a substituted phenyl acrylic acid
- (c) Reacting said tryptophan amide with substituted phenyl acrylic acid to obtain a compound having the structure (A2)
- (d) subjecting the compound having the structure (A) to a cyclization agent to obtain the structure (I)
2 more elements
Dependencies are inferred from the claim text.