Two reaction sequences commencing with different starting materials were successfully employed for the synthesis of frondosin A analogues, including (+/-)-frondosin A dimethyl ether. Construction of the bicyclo[5.4.0]undecane core in each case was achieved through an expedient microwave-assisted tandem 5-exo cyclization--Claisen rearrangement process.
从不同的起始原料开始的两个反应序列被成功地用于合成frondasin A类似物,包括(+/-)-frondosin A二
甲醚。在每种情况下,双环[5.4.0]
十一烷核的构建都是通过方便的微波辅助串联5-exo环化反应-克莱森重排过程实现的。