Oxazoline N-oxide-mediated [2+3] cycloadditions: Application to a total synthesis of the hypocholesterolemic agent 1233A

被引:27
作者
Dirat, O [1 ]
Kouklovsky, C [1 ]
Langlois, Y [1 ]
机构
[1] Univ Paris 11, Lab Synth Subst, Associe CNRS, ICMO, F-91405 Orsay, France
关键词
D O I
10.1021/jo980813u
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Oxetanone 1233A1 has been synthesized in 22 steps and 3.43% overall yield from 3-methylglutaric anhydride. Asymmetric carbon at C-7 was introduced by a diastereoselective esterification of 3-methylglutaric anhydride, whereas the two asymmetric carbons at C-2' and C-3' were controlled by an asymmetric [2 +/- 3] cycloaddition using camphor-derived oxazoline N-oxide as dipole.
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页码:6634 / 6642
页数:9
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