作者:Bernard Loubinoux、Jean-Luc Sinnes、Anthony C. O'Sullivan、Tammo Winkler
DOI:10.1002/hlca.19950780112
日期:1995.2.8
Using a series of enantioselective aldol condensations followed by an ester enolate addition, the cyclic hemiacetal 2 was prepared stereospecifically. Hemiacetal 2 represents the synthetically most challenging ‘southern part’ of the antifungal macrolide soraphen A (1). Spontaneous enolisation of 26, the C(2) epimer of 2, revealed that 2 is the most stable diastereoisomer at room temperature.
使用一系列对映选择性的醛醇缩合,然后加成酯烯酸酯,立体定向地制备了环状半缩醛2。半缩醛2代表抗真菌大环内酯soraphen A(1)的合成最具挑战性的“南部” 。的自发enolisation 26中,C(2)的差向异构体2,显示,2是在室温下最稳定的非对映体。