Table 1: Multistage MS data of compounds 3a–h by ESI-MS/MS.

Product ions of protonated compounds 3a–h [M + H]+ (m/z)
3a (334.10)3b (368.30)3c (348.20)3d (442.10)3e (432.10)3f (448.10)3g (426.2)3h (336.10)

Major fragments of
in-source fragmentation
173.10173.10173.10
183.10183.10183.10
214.20214.20
225.10225.10225.10
241.10241.10241.10
250.83250.83250.83
262.10262.10262.10
266.21
268.12
271.10271.10
280.22
300.30
319.10319.10319.10
364.10358.10
374.10
379.92

Product ion77.1077.1077.10
103.10103.10103.10
118.14118.14118.14
121.20121.20
130.12130.12130.12
132.97132.97
147.12147.12147.12
160.20160.20
173.10173.10173.10
177.21177.21
181.20181.20181.20
203.21203.21
214.11214.11
207.98207.98207.98
225.10225.10225.10
239.90
250.83250.83250.83
262.10262.10262.10
329.80
351.21