Table 1.

Reaction conditions to prepare 3a–c and 4a–c derivatives.

Compound	Nq-aa	MAS a (%)
		TEA	KOH
3a	1:1.8	85	90
3b	1:1.5	80	92
3c	1:1.2	80	88
4a	1:1.7	95	90
4b	1:2.5	92	87
4c	1:1.5	91	89

^a Microwave Assisted Synthesis: 110 °C, 250 W, 25 min, in dioxane-water (4:1), TEA (1mmol)/KOH (3N) 5 mL. Nq-aa: Naphthoquinone amino acid proportion.