活性递增 OH 解痉挛 CO2R R Spasmolytic activity 500 CH3 8 C2Hs 12 300 C3Hz 24 250 C4Hg 98 CsH11 240 C6H13 410 50 0 C7H15 490 HCI C2 C3 C4 C5 C6 C7 活性递增 0 50 100 150 200 250 300 350 400 450 500 HC1 C2 C3 C4 C5 C6 OH CO2R R Spasmolytic activity CH3 8 C2H5 12 C3H7 24 C4H9 98 C5H11 240 C6H13 410 C7H15 490 C7 解痉挛