Scheme 2. Synthesis of Compounds 61–69a.
aReagents and conditions: (a) substituted phenylboronic acids, Pd(PPh4)3, Na2CO3 (2.0 M), THF, 65 °C; (b) same as from compound 13 to 42 in Scheme 1.
aReagents and conditions: (a) substituted phenylboronic acids, Pd(PPh4)3, Na2CO3 (2.0 M), THF, 65 °C; (b) same as from compound 13 to 42 in Scheme 1.