| 摘要 |
FIELD: medicine, pharmaceutics. ^ SUBSTANCE: invention refers to compounds of formula (I) wherein A is chosen from -C(=O)NH2 and -C(=S)NH2; both R2 and R2a represent hydrogen atom; R3 is chosen from hydrogen atom and C3-C4cycloalkyl; R4 is chosen from hydrogen atom and hydroxy; R11 represents hydrogen atom; R12 is chosen from hydrogen atom and hydroxy; or radicals R11 and R12 form together a carbonyl substitute; and double bonds marked by dashed lines are absent. ^ EFFECT: preparation of the drug for treating a opioid receptor mediated disease or condition. ^ 9 cl, 4 tbl, 8 ex |
