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Herstellung der optisch aktiven Methyl‐benzyloxy‐malonsäurehalbester und Bestimmung ihrer absoluten Konfiguration. 57. Mitteilung über Mutterkornalkaloide
Author(s) -
Stadler P. A.,
Frey A. J.,
Hofmann A.
Publication year - 1963
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.19630460649
Subject(s) - chemistry , malonic acid , stereochemistry , absolute configuration , organic chemistry
The synthesis is described of the monoethyl ester chlorides of ( S )‐ and ( R )‐methyl benzyloxy malonic acid which are intermediates in the synthesis of ergotamine. Their absolute configuration was determined by linking the levorotatory antipode with S ‐(+)‐citramalic acid.