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Synthese von 15,16‐Dimethoxy‐8‐oxo‐ cis ‐erythrinan‐6‐carbonsäureäthylester
Author(s) -
Wilkens Heinrich J.,
Troxler Franz
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.19750580533
Subject(s) - chemistry , interpretation (philosophy) , stereochemistry , medicinal chemistry , computational chemistry , computer science , programming language
The cyclisation of either 1a or 3a with acid yielded the cis‐fused erythrinanone 2; no trans‐isomer could be detected. The structure of this unexpected product was determined by NMR. and confirmed by an X‐ray analysis. Various tetrahydro‐ and hexahydro‐2‐indolinones were prepared to facilitate the interpretation of the NMR.‐spectrum of 2.