Process for preparing a morphinan derivative

Details Process for preparing a morphinan derivative Process for preparing a morphinan derivative

1999-02-19

2000-10-24

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 89, 548229, C07D491048, C07D49108, C07D47108, C07D26316

Patent

active

061369799

ABSTRACT:
A process for preparing a morphinan derivative, by providing a dihydrofuranyl bridged tetracycle halide of the formula (19) ##STR1## wherein X is halogen, R is an alkyl group of from 1 to about 10 carbon atoms, and R.sub.1 is a protecting group; and converting the pentacycle halide into a morphinan derivative of formula (20) ##STR2## wherein R is as defined above.

REFERENCES:
patent: 5912347 (1999-06-01), Hudlicky et al.
patent: 5952495 (1999-06-01), Huang et al.
Arthur G.Schultz et al.Journal of Org.Chem.,vol. 50,pp. 217-231, 1985.

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