Table 1.

Multistage MS data of compounds 3a-e by ESI-MS/MS

Product ions of protonated compounds 3a-e [M+H] + (m/z)
	3a (328.80)	3b (363.24)	3c (409.0)	3d (454.69)	3e (407.87)
In-source fragmentation	65.09				65.09
	91.13	91.13	91.13	91.13	91.13
	119.14	119.14	119.14	119.14	119.14
		126.56
			171.0
				218.02
Product ion	65.09	65.09	65.09	65.09	65.09
	91.13	91.13	91.13	91.13	91.13
		99.54
			143.99
				190.99