Gabusectin derivatives, processes for preparing them and...

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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C548S544000

Reexamination Certificate

active

06962943

ABSTRACT:
The present invention relates to compounds of the formula (I)which are formed by the microorganism ST 003236 (DSM 14476) during fermentation, to a process for preparing and derivatizing them, to a pharmaceutical which comprises a compound of the formula (I) and to the use thereof for producing a pharmaceutical.

REFERENCES:
patent: 6476062 (2002-11-01), Chu et al.
patent: 2002/0137788 (2002-09-01), Vertesy
patent: WO 01/74772 (2001-10-01), None
patent: WO 02/046152 (2002-06-01), None
Royles, Brodyck J. L. , Naturally Occuring Tetramic Acids: Structure, Isolation and Synthesis, Chemical Reviews, 1995, vol. 95, No. 6, pp. 1981-2001.

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