作者:Michiel de Greef、Samir Z. Zard
DOI:10.1021/ol070488+
日期:2007.4.1
S-(3-chloro-2-oxo-propyl)-O-ethyl xanthate 1 by two consecutive xanthate transfer reactions, followed by spirocyclization of the resulting dihydroxy ketones, provides a flexible and highly convergent access to diversely substituted spiroketals, containing five-, six-, and seven-membered rings.
[反应:参见正文]通过两个连续的黄原酸酯转移反应对S-(3-氯-2-氧代丙基)-O-乙基黄原酸酯1进行官能化,然后对所得的二羟基酮进行螺环化,从而提供了一种灵活且高度收敛的通道包含五元,六元和七元环的不同取代的螺环化合物。