Table 1.

Phenylphenalenones isolated by HPLC and identified by 1D and 2D NMR spectroscopy and HRMS from ‘KTR’ leaves after infection with M. fijiensis strain E22

No.	R t (min)	Compound	Chemical structure	Occurrence in Musa
				‘Williams’	‘KTR’
1	74.77	2‐(4′‐Hydroxyphenyl)‐1,8‐naphthalic anhydride		+	+
2	82.12	trans‐2,3‐Dihydro‐2,3‐dihydroxy‐9‐phenylphenalenone		+	+
3	85.30	2‐Phenyl‐1,8‐naphthalic anhydride		+	+
4	87.81	2‐Hydroxy‐4‐(4′‐hydroxyphenyl)‐1H‐phenalen‐1‐one (irenolone)		+	+
5	89.35	2‐Hydroxy‐9‐(4′‐hydroxyphenyl)‐1H‐phenalen‐1‐one (hydroxyanigorufone)		+	+
6	89.99	2‐Methoxy‐9‐(4′‐hydroxyphenyl)‐1H‐phenalen‐1‐one		−	+
7	101.62	Methoxyanigorufone		−	+
8	102.92	Dihydroxyanigorootin		+	+
9	104.20	Anigorufone		+	+
10	105.89	2‐Hydroxy‐9‐(4′‐methoxyphenyl)‐1H‐phenalen‐1‐one (4′‐O‐methylanigorufone)		−	+
11	107.55	Isoanigorufone		−	+
12	108.84	2‐Hydroxy‐4‐(4′‐methoxyphenyl)‐1H‐phenalen‐1‐one (4′‐O‐methylirenolone)		+	+
13	118.98	3,3′‐bis‐Hydroxyanigorufone		+	+
14	120.64	Hydroxyanigorootin		−	+
15	121.94	Anigorootin		+	+

Occurrence of the metabolites is represented by (+) or absence/not detectable (−).

HPLC, high‐performance liquid chromatography; KTR, Khai Thong Ruang; NMR, nuclear magnetic resonance; 1D, one‐dimensional; 2D, two‐dimensional.