Benzofuran and other constituents of the essential oil of ageratum conyzoides

Phytochemical constituents and ethnopharmacological properties of Ageratum conyzoides L.

“…conyzoides . Related compounds such as encecalin (Dalziel, ), 6 vinyl‐7‐methoxy‐2,2dimethylchromene (Menut, Lamaty, & Amvam, ), dihydroencecalin (Thomas, ), dihydrodemethoxyencecalin (Kaur & Dogra, ), demethoxyencecalin (Solanki et al, ), demethylencecalin (Ekundayo et al, ), and 2‐(1‐oxo‐2′‐methylpropyl)‐2‐methyl‐6,7 dimethoxychromene (Pari, Rao, Subrahmanyam, Rastogi, & Devakumar, ) have been identified from A . conyzoides .…”

“…Hexane extract from the aerial part of the plant contains 2,2‐dimethylchromene‐7‐o‐β glucopyranoside (Ahmed, Abou‐Douh, Mohamed, Hassan, & Karchesy, ), 6‐(1‐methoxyethyl)‐7‐methoxy‐2,2‐dimethylchromene; Amadi, Duru, & Agomuo, ), 6‐(1‐ethoxyethyl)‐7‐methoxy‐2,2‐dimethylchromene (Abbiw, ), 6‐angeloyloxy‐7‐methoxy‐2,2‐dimethylchromene (Nebdum et al, ), and an inseparable mixture of encecanescins (Riaz, Khalid, & Chaudhary, ). Derivatives of benzofuran like 2‐(2′‐methylethyl)‐5,6‐dimethoxybenzofuran (Pari et al, ) and 14‐hydroxy‐2Hβ, 3 dihydroeuparine (Ahmed et al, ) have also been reported.…”

“…Derivatives of chromone such as 3‐(2′‐methylpropyl)‐2‐methyl‐6,8‐ dimethoxychroman‐4‐one; Pari et al, ) have also been obtained from the plant. It has been reported that A .…”

“…Isolated polymethoxy flavones from A . conyzoides have shown significant activity in inducing the differentiation of human promyelocytic leukemia cells (HL‐60; Pari et al, ). The aqueous extract of A .…”

“…Four polymethoxyflavones have been obtained from citrus juice, which acted as potent cancer‐protective agents (Kawaii, Tomono, Katase, Ogawa, & Yano, ), and isolated polymethoxy flavones from A . conyzoides have shown significant activity in inducing differentiation of human promyelocytic leukemia cells (HL‐60; Pari et al, ).…”