3030-19-1Relevant articles and documents
Synthetic method 5- of -4- (-1- I -3-)-(C)-(C)-ethyl-methyl-indol. (by machine translation)
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, (2020/02/06)
To the method, the 3 - indole chromogenic 5 - substrate is obtained, by hydrolyzing the indole phenol with acetic. anhydride, under an acidic condition with acetic, anhydride to form an indole, chromogenic substrate by hydrolyzing the, indole phenol, with acetic anhydride under an acidic, condition with acetic anhydride under an acidic condition 5 - 5 . (by machine translation)
Indoxylic acid esters as convenient intermediates towards indoxyl glycosides
Boettcher, Stephan,Thiem, Joachim
, p. 564 - 574 (2014/02/14)
Indoxylic acid methyl and allyl esters with varied halide-substitution patterns were obtained in excellent yields using a scalable route. Phase-transfer glycosylation of these key intermediates was carried out with various glycosyl halides. Subsequent mild silver-mediated decarboxylation followed by Zemplen deacetylation led to indoxyl glycosides in good overall yields. Indoxyl glycosides are well-established and widely used tools for enzyme screening and enzyme-activity monitoring. In the past, their synthesis has been difficult, so this new approach has led to a variety of useful structures. Indoxyl glycosides with varied halide-substitution patterns were synthesized using indoxylic acid esters as key intermediates. Glycosylation under phase-transfer conditions, ester cleavage, and mild decarboxylation led to the indoxyl glycosides in good yields. This approach enables access to a number of different indoxyl compounds. Copyright
