研究了1,2,5-硒二唑并[3,4-b]吡啶(SPb),1,2,5-硒二唑并[3,4-d]嘧啶-7-(5H,6H)酮(SPO),1,2,5-硒二唑并[3,4-d]嘧啶-5,7-(4H,6H)二......