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从天南星科植物掌叶半夏PinelliaPedatisecta块茎的生物碱部分,分离鉴定了7个化合物:L-脯氨酰-L-丙氨酸酐(L-prolyl-L-alanineanhydride,ⅩⅩⅤ),3-乙酰胺基-2-哌淀酮(3-acetamino-2-piperidone,ⅩⅩⅥ),腺苷(adenosine,ⅩⅩⅦ),L-苯丙氨酰-L-丝氨酸酐(L-phenylalanyl-L-serylanhydride,ⅩⅩⅧ),L-酪氨酰-L-丙氨酸酐(L-tyrosyl-L-alanineanhydride,ⅩⅩⅨ),掌叶半夏碱丁(pedatisectineD,ⅩⅩⅩ),掌叶半夏碱戊(pedatisectineE,ⅩⅩⅩⅠ),均为首次从该植物中分得,其中掌叶半夏碱丁、戊为2个吡嗪类新化合物。
Four compounds were identified from the alkaloid fraction of Pinellia Pedatisecta tubers from the Pinellia tuber’s pinellia in the Araceae plant: L-prolyl-L-alanineanhydride (XXV), 3-acetamido-2 - 3-acetamino-2-piperidone (XXVI), adenosine (XXVII), L-phenylalanyl-L-serylanhydride (XXVIII), L-casein L-tyrosyl-L-alanineanhydride (XXIX), pedatisectine D (XXX), and pedatisectine E (XXXI) are all isolated from the plant for the first time. Among them, palmitoyl butoxide and pentane are two new pyrazine compounds.