Process for the production of oxabispidines

Details Process for the production of oxabispidines Process for the production of oxabispidines

2005-03-25

2008-10-21

Saeed, Kamal A (Department: 1626)

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

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

Reexamination Certificate

active

07439355

ABSTRACT:
There is provided a process for the preparation of a compound of formula I, (I), or a pharmaceutically acceptable derivative thereof, wherein A, B, G, R1, R2, R3, R4and R41to R46have meanings given in the description, which process comprises the dehydrative cyclisaton of a compound of formula II. (II).

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