Table 1.

Physicochemical characteristics of the isolated compounds K₁ and K₂.

Physicochemical characteristics	Isolated compounds
	K1	K2
Color and appearance	Reddish-orange amorphous	Reddish-orange amorphous
Solubility	Highly soluble: chloroform, ethyl acetate, dichloromethane, acetonitrile, methanol, acetone Partial-soluble: ethanol, dimethylformamide, dimethyl sulphoxide, water Non-soluble: n-hexane	Highly soluble: chloroform, ethyl acetate, dichloromethane, acetonitrile, methanol, acetone Partial-soluble: ethanol, dimethylformamide, dimethyl sulphoxide, water Non-soluble: n-hexane
Melting point (°C)	245–250 with decomposition	245–250 with decomposition
UV–Visible (λmax, nm)	239, 440 (Methanol)	215, 442 (Methanol)
FT-IR (υmax, cm-1)	1583 (N–H bending) 1648–1668 (C=C stretching) 1705–1740 (C=O stretching) 2849–2916 (C–H stretching)	1587 (N–H bending) 1627–1656 (C=C stretching) 1728 (C=O stretching) 2853–2957 (C–H stretching)
( +)-HR-ESI-MS	m/z 1269.6170 [M + H]+ (calcd for C62H85N12O17, 1269.616); m/z 1291.5997 [M + Na]+ (calcd for C62H84N12O17Na, 1291.598)	m/z 1255.638 [M + H]+ (calcd. for C62H87N12O16, 1255.637); 1277.623 [M + Na]+ (calcd. for C62H86N12O16Na, 1277.619)
Monoisotopic masses	1268.617 g/mol	1254.638 g/mol