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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: Tetrahedron. 2009 Feb;65(7):1241. doi: 10.1016/j.tet.2008.12.020

FIGURE 1.

FIGURE 1

Absorption spectra of compound 7 (4.167 × 10−5 M) in water. 1: in the dark; 2: irradiated with visible light for 5 min; 3: in the dark for 30 min after irradiation with visible light for 5 min; 4: irradiated with UV at 365 nm for 30 min after irradiation with visible light for 5 min.