Scheme 8.
Synthesis of compounds 73–76.
Reagents and conditions: (a) MeCN, K2CO3, ethyl nitroacetate, reflux. (b) AcOH, Mn(OAc)3, ethyl nitroacetate, 70 °C. (c) ethyl diazoacetate, toluene, reflux.
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.