Table 2. Transformation of 8a in ACN/Water (50:50, v/v) at Different Concentrations and Various Temperatures (Conc. 1 mM) after 72 h of Incubation^a.

		8a	8b	8c
concentration	0.5 mM	86.27	8.65	5.07
	1 mM	80.58	11.74	7.66
	2 mM	76.17	15.42	8.42
temperature	4 °C	84.69	12.96	2.33
	22 °C	80.58	11.74	7.66
	37 °C	59.77	27.89	12.33
	50 °C	65.20	25.94	8.85
	80 °C	57.84	42.15

^aSee Table 1 for HPLC conditions.