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Last Updated: December 12, 2025

Claims for Patent: 8,399,520

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Summary for Patent: 8,399,520

Title:	Selective estrogen receptor modulator
Abstract:	The present invention provides a compound represented by the following formula (I); [wherein T represents a single bond, a C1-C4 alkylene group which may have a substituent and the like; formula (I-1) represents a single bond or a double bond; A represents a single bond, a bivalent 5- to 14-membered heterocyclic group which may have a substituent and the like; Y represents a single bond and the like; Z represents a methylene group and the like; ring G represents a phenylene group and the like which may condense with a 5- to 6-membered ring and may have a heteroatom; Ra and Rb are the same as or different from each other and represent a hydrogen atom and the like; W represents a single bond and the like; R′ represents 1 to 4 independent hydrogen atoms and the like; and R″ represents 1 to 4 independent hydrogen atoms and the like] or a salt thereof, or a hydrate thereof.
Inventor(s):	Shinichi Hamaoka, Noritaka Kitazawa, Kazumasa Nara, Atsushi Sasaki, Atsushi Kamada, Tadashi Okabe
Assignee:	Eisai R&D Management Co Ltd
Application Number:	US13/048,391
Patent Claims:	1. A hydrochloric acid salt of the compound of the following structural: 2. A pharmaceutical composition comprising a hydrochloric acid salt of the compound of the following structural formula and a pharmaceutically acceptable carrier: 3. A method for treating estrogen-dependent osteoporosis or estrogen-dependent breast cancer in a subject in need thereof, comprising administering to said subject an effective amount of the pharmaceutical composition of claim 1.

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