. 2019 Oct 24;2019:4568401. doi: 10.1155/2019/4568401

Table 1.

Cyclopeptide alkaloids identified in leaf extract from Ziziphus mucronata plants.

Compound	Chemical formula	tR (min)	[M + H]⁺	[M + H]⁺calcd.	Main product ions created from [M + H]⁺ precursor ion [m/z] in MS2 spectra
Sanjoinine A	C₃₁H₄₂N₄O₄	5.04; 5.06	535.3262	535.3279	148.1116 [C₁₀H₁₄ N]⁺
Sanjoinine B	C₃₀H₄₀N₄O₄	4.82	521.3099	521.3122	148.1116 [C₁₀H₁₄ N]⁺
Sanjoinine F	C₃₁H₄₂N₄O₅	4.64	551.3209	551.3228	148.1116 [C₁₀H₁₄ N]⁺
Sanjoinine G1	C₃₁H₄₄N₄O₅	4.46	553.3355	553.3384	148.1115 [C₁₀H₁₄ N]⁺
Sanjoinine G2	C₃₀H₄₂N₄O₅	4.89	539.3207	539.3228	219.1483 [C₁₃H₁₉N₂O]⁺, 148.1116 [C₁₀H₁₄ N]⁺