Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 520-27-4, Name is Diosimin, molecular formula is C28H32O15. In an article, author is Bingul, Murat,once mentioned of 520-27-4, COA of Formula: C28H32O15.
The Hemetsberger reaction: A new approach to the synthesis of novel dihydroindoloindole systems
The Hemetsberger indole synthesis provides an alternative method for the preparation of dihydroindoloindole systems. Two novel examples, dimethyl 3,8-dihydroindolo[7,6-g]indole-2,7-dicarboxylate and dimethyl 1,6dihydroindolo[5,4-e]indole- 2,7-dicarboxylate, were succesfully prepared by the Hemetsberger indole sythesis. The ester functionality on the C-2 position was used for the further elaboration of these tetracyclic systems. [GRAPHICS]
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Reference:
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles