“…Several major flavonoids have been found in various pollen samples (Figure 3), including luteolin, apigenin, chrysin (flavones), naringenin, pinocembrin, pinostrobin, pinobanksin (flavanones), rutin, myricetin, quercetin, kaempferol, isorhamnetin, quercitrin (flavonols), daidzein (isoflavone), antirrhinin (anthocyanidin), catechin, and epicatechin (flavanols) [30,35,39,40,43,44]. Other flavonoids identified recently include the biflavonoid rhusflavone, which exhibits high leishmanicidal activity [32], and several flavonoid glycoside derivatives such as the monobenzoylated pyranose 1, the mono-acetylated kaempferol diglycoside 2, and isorhamnetin-O-hexosyl-deoxyhexoside 3 [25,45].…”