| 摘要 |
Optically active or racemic compounds are provided having the formula <IMAGE> where R2, R3 and R4 are selected from the group consisting of H and OA with the provision that at least one of R2, R3 and R4 is H, that R2 and R4 are not both OA; A is H or is selected from the group consisting of hydrocarbyl radicals, said hydrocarbyl radicals being further optionally substituted with radicals selected from the group consisting of <IMAGE> R5 is selected from the group consisting of alkyl and aromatic residues, preferably radicals having between 1 and 12 carbon atoms, including alkyl, alkyl substituted with aryl radicals, and aryl radicals substituted with alkyl radicals; n is an integer between 1 and 4; R6 is an alkyl chain comprising between 1 and 4 carbon atoms; X is oxygen; and R1 is selected from the group consisting of <IMAGE> wherein Y is as defined in the specification, and a is an integer of from zero to 3. These compounds are useful in treatment of disorders of the central nervous, cardiovascular, and endocrine systems, such as for inducing anorexia and weight loss in humans.
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