Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1994-06-28
1995-10-31
Griffin, Ronald
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 41, 536 181, 536 185, 536 186, A61K 3170, C07H 1520, C07H 1526
Patent
active
054630401
ABSTRACT:
The present invention relates to a method of increasing the yield of etoposide produced relative to prior art processes. A residue obtained as a result of reacting etoposide triacetate with a first lower alkanol in the presence of a first transesterification catalyst is provided. This residue is then reacted with a second lower alkanol and a second transesterification catalyst.
REFERENCES:
patent: 4547567 (1985-10-01), Umezawa et al.
patent: 4564675 (1986-01-01), Kurabayashi et al.
patent: 4757138 (1988-07-01), Fujii et al.
patent: 4900814 (1990-02-01), Sterling et al.
patent: 4965348 (1990-10-01), Saulnier et al.
patent: 5066645 (1991-11-01), Oknuma et al.
patent: 5132322 (1992-07-01), Lee et al.
patent: 5206350 (1993-04-01), Wang et al.
Clinical Pharmacy, vol. 2, No. 2, Mar.-Apr. 1983, pp. 112-119 Phillips et al, "Review of etofoside".
Helvetica Chemica Acta, vol. 51, Fasciculus 1 (1968), pp. 163-168 Kuhn et al, "Abspatung von Acyl-Schutzgruppen be ialkaliempfindlichen Glucosiden,--Synthese von Podophyllotoxen-B-D-glucosid".
Prog. Drug Res., vol. 33, (1989), pp. 169-266 Stahelin et al, "Frosm Podophyllotoxin glucoside to etoposide".
Griffin Ronald
Teva Pharmaceutical Industries Ltd.
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