| 摘要 |
The present invention relates to compounds of formula (I) in which formula X is hydrogen or hydroxy; R<1> and R<2> which may be the same or different, stand for hydrogen or C1-C5 hydrocarbyl; or R<1> and R<2>, taken together with the carbon atom bearing the group X, can form a C3-C8 carbocyclic ring; Q is methylene, ethylene, tri- or tetra-methylene and may optionally be substituted with an oxy group, -OR<3>, in which R<3> is hydrogen, methyl or ethyl; Y is either a single bond or C1-C2 hydrocarbylene; and one or more carbons within R<1>, R<2>, and/or Y may optionally be substituted with one or more fluorine atoms, or with a hydroxyl group. The compounds show anti-inflammatory and immunomodulating effects as well as strong activity in inducing differentiation and inhibiting undesirable proliferation of certain cells.
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