Scheme 15.
Enantioselective obtaining of (+)-94. Reagents and conditions: (a) (1) NaH/DMF, 1 h, Ar; (2) then 95, 2 h; and (b) DMSO/1 M HClO4, d-tyrosine, 10 °C, 20 min.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.