Formal total synthesis of (−)-anisomycin based on the stereoselective nucleophilic substitution along with aryl migration
作者:Machiko Ono、Keiko Suzuki、Hiroyuki Akita
DOI:10.1016/s0040-4039(99)01715-3
日期:1999.11
The stereoselective conversion of (4R)-5-hydroxy-4-(4′-methoxyphenyl)-2(E)-pentenoate 5 into the (4S)-4-hydroxy-5-(4′-methoxyphenyl)-2(E)-pentenoate 6 using an AgNO3/MS 4Å/MeNO2 system was accomplished along with complete inversion at the exposition, and the synthesis of the intermediate (4S)-7 for the chiral synthesis of (−)-anisomycin 8 from (4S)-6 based on osmium tetroxide-catalyzed stereoselective
(4 R)-5-羟基-4-(4'-甲氧基苯基)-2(E)-戊烯酸酯5的立体选择性转化为(4 S)-4-羟基-5-(4'-甲氧基苯基)-2使用AgNO 3 / MS4Å/ MeNO 2系统完成(E)-戊烯酸酯6并在博览会上进行完全反转,并合成用于手性合成(-)-茴香霉素8的中间体(4 S)-7由(4S)-6基于四氧化os催化的立体选择性二羟基化反应得到。
Formal synthesis of (−)-anisomycin based on stereoselective nucleophilic substitution along with 1,2-aryl migration
the (4S)-4-hydroxy-5-(4′-methoxyphenyl)-2(E)-pentenoate 5 using the AgNO3/MS 4 Å/MeNO2 system was accomplished along with complete inversion at the C4-position, and the synthesis of the intermediate (4S)-7 for the chiral synthesis of (−)-anisomycin 6 from (4S)-7 based on osmium tetroxide-catalyzed stereoselective hydroxylation was achieved.
(4所述的立体选择性转化- [R)-5-羟基-4-(4'-甲氧基苯基)-2(É)-pentenoate 4到(4小号)-4-羟基-5-(4'-甲氧基苯基)-2-使用AgNO 3 / MS 4Å/ MeNO 2系统完成(E)-戊烯酸酯5以及在C 4位完全转化,并合成中间体(4 S)-7用于手性合成(-基于四氧化os催化的立体选择性羟基化反应,获得了(4 S)-7的)-茴香霉素6。