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1 H Nmr study of the preferred conformations in N ‐alkylgranatanine‐3‐spiro‐5′‐hydantoins
Author(s) -
Trigo G. G.,
Avendaño C.,
Ballesteros P.,
Gonzalez A.
Publication year - 1978
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570150523
Subject(s) - chemistry , hydantoin , nuclear magnetic resonance spectroscopy , alkyl , stereochemistry , crystallography , organic chemistry
The conformations of a new series of compounds of the general structure N ‐alkylgranatanine‐3‐spiro‐5′‐hydantoin, synthesized in our laboratory from the corresponding 9‐alkyl‐9‐azabieyclo‐[3.3.1 ]nonan‐3‐ones, were studied by 1 H nmr spectroscopy at different p H values in some instances. We have assigned boat conformations for the spiropiperidines.