The object of the present invention is to provide a drug effective in treating or preventing osteoporosis. The present invention discloses a therapeutic or preventive drug for osteoporosis having a compound shown in the formula (1)
(wherein R
1
is an alkyloxy group with the carbon number of 1 to 4)
or a pharmaceutically acceptable salt or ester of said compound in the formula (1) as an effective ingredient. In the compound of the formula (1), a substance in which R
1
is CH
3
O is isotaxiresinol derived from
Taxus yunanennsis
and showed physiological activities in inhibiting bone resorption and improving bone formation.
本发明的目的是提供一种有效治疗或预防骨质疏松症的药物。本发明揭示了一种用于骨质疏松症的治疗或预防药物,其具有公式(1)中所示的化合物(其中R1是碳数为1到4的烷氧基)或公式(1)中所述化合物的药学上可接受的盐或酯作为有效成分。在公式(1)的化合物中,R1为
CH3O的物质是源自云南红豆杉的异
紫杉醇,具有抑制骨吸收和促进骨形成的生理活性。