The present invention relates to compounds according to the formula I: Where Ra is H or an optionally OH-substituted C1-C3 alkyl; R1 is OR1, an optionally substituted C4-12 carbocyclic group which may be saturated or unsaturated (including aromatic) or an optionally substituted heterocyclic group; R1 is an optionally substituted C1-C14 hydrocarbyl group or an optionally substituted heterocyclic group; R2, R3 and R4 are each independently H, an optionally substituted C1-C4 alkyl group (preferably CH3, CH2CH3 or CF3), halogen (preferably F, Cl, Br), OR, CN, NO2, a C1-C6 thioether, a C1-C6 thioester group, an optionally substituted CO2R group, an optionally substituted COR group or an optionally substituted OCOR group (preferably R4 is H); R is H or an optionally substituted C1-C6 alkyl group; RHET is an optionally substituted heterocyclic group; and pharmaceutically acceptable salts, solvates or polymorphs thereof.
本发明涉及化合物I式:其中Ra为H或有选择地取代的C1-C3烷基;R1为OR1,有选择地取代的C4-12
碳环基,可以是饱和或不饱和的(包括芳香族)或有选择地取代的杂环基;R1为有选择地取代的C1-C14烃基或有选择地取代的杂环基;R2、R3和R4各自独立地为H,有选择地取代的C1-C4烷基(优选为
CH3、CH2 或
CF3)、卤素(优选为F、Cl、Br)、OR、CN、
NO2、C1-C6
硫醚、C1-C6
硫酯基、有选择地取代的CO2R基、有选择地取代的COR基或有选择地取代的OCOR基(优选为R4为H);R为H或有选择地取代的C1-C6烷基;RHET为有选择地取代的杂环基;以及其药学上可接受的盐、溶剂或多晶形式。