A seco-labdane, chapecoderin A 1, has been synthesized starting from (S)-(+)-Wieland–Miescher ketone analogue 9. The absolute configuration has been determined to be 5S,10S.
甲开环-labdane,chapecoderin阿1,已经合成从(起始小号) - (+) -维兰德-米舍尔
酮类似物9。绝对构型已被确定为5小号,10小号。