Process for the manufacturing of 7-ethyl-10-hydroxy...

Details Process for the manufacturing of 7-ethyl-10-hydroxy... Process for the manufacturing of 7-ethyl-10-hydroxy...

2011-03-22

2011-03-22

Aulakh, Charanjit S (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S089000

Reexamination Certificate

active

07910737

ABSTRACT:
The invention discloses the preparation method of 7-ethyl-10-hydroxycamptothecin from 4-ethyl-7,8-dihydro-4-hydroxy-1H-pyrano[3,4-f]indolizine-3,6,10(4H)-trione and 1-(2-amino-5-hydroxyphenyl)-propan-1-one using higher reaction temperature and faster heating to that temperature.

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