2-substituted D-homo-estra-1,3,5(10)-trienes as inhibitors...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Ketone doai

Reexamination Certificate

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C514S178000, C514S179000, C568S326000, C552S502000, C552S625000

Reexamination Certificate

active

07435757

ABSTRACT:
The invention relates to new 2-substituted D-homo-estra-1,3,5(10)-trienes of general formula Iin whichR2means a C1-C8-alkyl group, a C1-C8-alkyloxy group or a halogen atom,R13means a hydrogen atom or a methyl group,R17means a hydrogen atom or a fluorine atom,as well as their pharmaceutically acceptable salts,their manufacture and use as medicaments for prophylaxis and therapy of estrogen-dependent diseases that can be influenced by inhibition of 17β-hydroxy steroid dehydro-genase type 1.

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Eliseev et al., “Synthesis of steroid estrogens 8-isoanalogs with a substituent at C-2.” Vestnik Leningradskogo Universiteta, Seriya 4: Fizika, Khimiya, No. 4, pp. 74-79, 1991. English Abstract.
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Egorova, V. V. et al., “Structure and reactivity of steroids. VI. Long range effects in estra—1,3,5-(10)-triene compounds,” Tetrahedron, 1973, pp. 301-307 Coden: Tetrab, vol. 29, No. 2, XP002350863.

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