| 摘要 |
The invention is directed to compounds of formula (I) wherein R1 = alkyl, alkenyl or alkynyl having from 6 to 24 carbon atoms; n = 0 - 12; X = oxygen or NH; and the physiologically safe salts, esters, optically active forms, racemates and derivatives thereof which can be metabolized in vivo to yield compounds of general formula (I), methods of preparing same, and drugs containing said compounds, for treating bone metabolic disorders.
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