Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-06-08
2011-11-29
Aulakh, Charanjit (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C546S298000
Reexamination Certificate
active
08067595
ABSTRACT:
In order to efficiently supply CPT, which is a starting compound of irinotecan hydrochloride and a variety of camptothecin derivatives, by a practical total synthesis, the invention provides a means of efficiently preparing a tricyclic ketone that corresponds to a CDE ring moiety of a camptothecin (CPT) skeleton.
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Nishiyama Hiroyuki
Sawada Seigo
Aulakh Charanjit
Kabushiki Kaisha Yakul't Honsha
Wolf Greenfield & Sacks P.C.
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