Fractions and isolated compounds from Oxyanthus speciosus subsp. stenocarpus (Rubiaceae) have promising antimycobacterial and intracellular activity

Table 1 Bioactive compounds detected in the acetone crude extract of Oxyanthus speciosus

S/N	Compound	RT (min)	Molecular formula	MW	% Peak Area
1	2-Methylthiophene	12.03	C₅H₆S	98	0.03
2	2-Methyl-penten-3-yne	1.33	C₆H₈	80	1.63
3	4-(Methylenecyclopropyl)-butyraldehyde or 4-(2-Methylenecyclopropyl) butanal	11.89	C₈H₁₂O	124	7.99
4	Methylcyclooctane	11.81	C₉H₁₈	126	0.34
5	O-Decylhydroxylamine	7.26	C₁₀H₂₃NO	173	3.92
6	4H-1,3,2-Dioxaborin, 6-ethenyl-2-ethyl-4-methyl-4-(2-methylpropyl)-	21.57	C₁₂H₂₁BO₂	208	0.10
7	Phenyl 4-methoxybenzoate	19.62	C₁₄H₁₂O₃	228	0.00007
8	3-Octadecyne	12.24	C₁₈H₃₄	250	0.87
9	2-Methylheptadecane	15.58	C₁₈H₃₈	254	1.94
10	Nonadecane	11.88	C₁₉H₄₀	268	7.99
11	Neophytadiene	24.67	C₂₀H₃₈	278	0.44
12	Phytol	14.75	C₂₀H₄₀O	296	0.73
13	1-Iodo-2-methylundecane	13.81	C₁₂H₂₅I	296	5.09
14	1,2-Benzenedicarboxylic acid, butyl 2-ethylhexyl ester	18.13	C₂₀H₃₀O₄	334	0.05
15	Phthalic acid, heptyl pentyl ester	13.32	C₂₀H₃₀O₄	334	0.02
16	Heptacosane	17.21	C₂₇H₅₆	380	0.87
17	2-(Cholest-5-en-3-yloxy) ethyl acetate	22.93	C₃₁H₅₂O₃	472	0.92

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