17-aryl linker derivatised estrogen 3-sulphamates as...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Cyclopentanohydrophenanthrene ring system doai

Reexamination Certificate

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C514S176000, C540S109000, C552S614000

Reexamination Certificate

active

07067503

ABSTRACT:
There is provided a compound comprising a steroidal ring system and a group R1selected from any one of a sulphamate group, a phosphonate group, a thiophosphonate group, a sulphonate group or a sulphonamide group; wherein the D ring of the steroidal ring system is substituted by a group R2of the formula —L-R3, wherein L is an optional linker group and R3is an aromatic hydrocarbyl group.

REFERENCES:
patent: WO 96/05216 (1996-02-01), None
patent: WO 98/42729 (1998-10-01), None
patent: WO 99/64013 (1999-12-01), None
patent: WO 00/66095 (2000-11-01), None
Ciobanu et al., J. Med. Chem., vol. 42, pp. 2280-2286, 1999.
Liviu C. Ciobanu, et al., Potent Inhibition Of Steroid Sulfatase Activity by3-O-Sulfamate 17α-Benzyl (or 4-tert-butylbenzyl) estra 1,3,5 (10)-trienes: Combination Of Two Substituents At Positions C3 and C17α Of Estradiol, J. Med. Chem. . (1999), 42 p. 22892286.
Donald Poiner, et al., 17α-Alkyl- Or 17α-Substituted Benzyl- 17β-Estradiols:A New Family Of Estrone Sulfatase Inhibitors, Bioorganic & Medicinal Chemistry Letters 8 (1998) pp. 1891-1896.
A. Purohit, et al., The Development Of Aring Modified Analogues Of Oestrone 3-O-Sulphamate As Potent Steriod Sulphatase Inhibitors With Reduced Oestrogenicity, J. Steroid Biochem. Molec. Biol. vol. 64, No. 5, (1998) p. 269275.
Jinbo Yoshikazu, et al., Preparation Of Novel Estradiol Denvatives As Steroid Sulfatase Inhibitors; STN Database Accession No. 133:222880.

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