Heteroaryl substituted oxazinone compounds for the preparation o

Details Heteroaryl substituted oxazinone compounds for the preparation o Heteroaryl substituted oxazinone compounds for the preparation o

1994-11-07

1996-07-02

Tsang, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen in the nitrogen containing substituent

549510, 549511, 549512, 549513, 560 30, 560 45, 564183, C07D30500, C07D41312

Patent

active

055323634

ABSTRACT:
Process for the preparation of a taxol intermediate comprising contacting an alcohol with an oxazinone having the formula: ##STR1## wherein R.sub.1 is aryl, heteroaryl, alkyl, alkenyl, alkynyl or OR.sub.7 wherein R.sub.7 is alkyl, alkenyl, alkynyl, aryl or heteroaryl; R.sub.2 and R.sub.5 are independently selected from hydrogen, alkyl alkenyl, alkynyl, aryl, heteroaryl, and OR.sub.8 wherein R.sub.8 is alkyl, alkenyl, alkynyl, aryl, heteroaryl, or hydroxyl protecting group; and R.sub.3 and R.sub.6 are independently selected from hydrogen, alkyl, alkenyl, alkynyl, aryl and heteroaryl.

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