(3R, 4R)-trans-3, 4-diarylchroman derivatives and a method...

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Reexamination Certificate



The present invention relates to compounds of the formula I in which substituents R2and R3are arranged in trans-configuration:wherein:R1is H or C1-C6 alkyl; C3-C7 cycloalkyl;R2is phenyl, optionally substituted with 1 to 5 substituents independently selected from the group comprising OH, C1-C6-alkyl, halogen, nitro, cyano, SH, SR4, trihalo-C1-C6-alkyl, C1-C6-alkoxy and phenyl, wherein R4is C1-C6 alkyl;R3is phenyl substituted with OR5wherein R5has the formula (II), (III) or (IV)wherein Y is chosen from NHR4, NR42, NHCOR4, NHSO2R4, CONHR4, CONR4, CONR42, COOH, COOR4, SO2R4, SOR4, SONHR4, SONR42, a C3-C7 heterocyclic ring, saturated or unsaturated, containing one or two heteroatoms independently selected from the group consisting of O, S and N, optionally being substituted with 1 to 3 substituents independently selected from the group comprising H, OH, halogen, nitro, cyano, SH, SR4, trihalo-C1-C6-alkyl, C1-C6-alkyl and C1-C6-alkoxy, preferably NHR4, NR24, or a nitrogen heterocycle, wherein R4is as defined above, and the esters, ethers, and salts of the compounds of formula I, optionally along pharmaceutically acceptable excipients, a process for the preparation of the same, and a method of preventing and/or treating estrogen-related disease conditions in a subject using compounds of formula 1, or its salts, optionally along with pharmaceutically acceptable excipients.

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