Processes for the preparation of...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Details

C514S421000, C548S489000, C548S484000, C548S452000, C560S115000

Reexamination Certificate

active

08084487

ABSTRACT:
The present invention relates to a process for the production of carbamic acid (2-chloroethyl)(3-oxocyclohexyl)-alkyl ester enantiomers and of 1-carbalkoxy-4-ketoperhydroindole enantiomers.

REFERENCES:
patent: WO 03/047581 (2003-06-01), None
Dolfini J E et al., “Aziridinyl Compounds as Intermediates in Pyrrolidine Synthesis”, Tetrahedron Letters, vol. 6, No. 25, pp. 2053-2058, 1965.
Sepulveda-Arques J et al., “Stereoselective Ring Transformation of N-Alkyl Aziridines into Oxazolidin-2-Ones”, vol. 52, No. 6, pp. 2097-2102, 1996.
Fritz H et al., “Synthesis of an undecacyctic di-indoline diether of the dimeric calebas curare alkaloids type”, Liebigs Ann. Chem, 715, pp. 135-145, 1968.

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