Method for the purification of 23-E isomers of 23-imino derivati

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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C07D31500

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active

054789516

ABSTRACT:
The present invention provides a method for the purification of a 23-E isomer of a 23-imino derivative of a LL-F28249 compound having the structural formula I ##STR1##

REFERENCES:
patent: 4916154 (1990-04-01), Asato et al.
patent: 4988824 (1991-01-01), Maulding et al.

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