Antioxidant Activity, Enzyme Inhibition Potentials, and Phytochemical Profiling of Premna serratifolia L. Leaf Extracts

Table 3

Major compounds identified in the ethanol extract of P. serratifolia leaves using LC-QTOF-MS/MS based on positive and negative modes.

Compounds	RT	Area (%)	Formula	ESI	[M-H]^+/^-[M-H]^- ()	Major fragment
Scroside E	7.22	12.36	C30H38O16	+	673	672, 293, 147
	7.48	11.34		—	671	653
Campneoside I	8.17	4.45	C30H38O16	—	653	653
Forsythoside B	8.32	15.51	C34H44O19	—	756	755
Forsythoside A	8.49	31.33	C29H36O15	+	625	663, 642, 608, 325, 163
Isoacteoside	8.50	44.17	C29H36O15	—	623	623
Lavandulifolioside	8.60	22.75	C34H44O19	—	755	755
	8.60	30.57		+	757	774, 325
Diosmin	9.42	9.23	C28H32O15	+	609	609, 325, 463
Nobilin D	12.24	8.75	C17H20O6	+	321	307, 161