| 摘要 |
The title compds. (I; L, D = isomer; R1 = H, C1-3 primary alc. or allyl; R2 = H or C1-3 primary alkyl; R1 = arryl, R2 = H; R3 = H or C1-3 primary alkyl; R4 = C1-4 primary or secondary alkyl; R5 = H or C1-4 primary or secondary alkyl) were prepd. I have analgesic activity in mice in the hot plate test.
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