1.
Org Lett
; 3(5): 671-4, 2001 Mar 08.
Article
in English
| MEDLINE
| ID: mdl-11259033
ABSTRACT
[structure: see text]. The NK-1 receptor antagonist 1 has been prepared in seven steps from phenylglycine methyl ester. The key steps are a double ring closing metathesis reaction of tetraene 7 to prepare spirocycle 6 and a reductive Heck reaction to introduce the aryl moiety. This latter reaction discriminates the olefins of compound 6 and proceeds in a highly regio- and stereoselective manner.