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Totalsynthese von Betalainen
Author(s) -
Hermann Kurt,
Dreiding André S.
Publication year - 1975
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19750580634
Subject(s) - chemistry , hydrolysis , semicarbazone , proline , stereochemistry , organic chemistry , amino acid , biochemistry
A total synthesis of betalaine pigments ( 6 ) is described. The key intermediate is betalamic acid in the form of its dimethyl ester semicarbazone ( 9 ), which was transformed with L‐proline ( 16 ) into indicaxanthine dimenthl ester ( 5 ), with L‐cyclodopa methul ester ( 17 ) into betanidine trimethyl ester ( 3 ) and by hydrolysis of the latter into betanidine ( 2 ).
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