Phytotoxicity of constituents of glandular trichomes and the leaf surface of camphorweed, Heterotheca subaxillaris

Antigiardial activity of flavonoids from leaves of Aphelandra scabra

“…The phytochemical study of ASH-2a fraction led us to obtain the triterpene squalene (1), which was identified by comparison of its fragmentation pattern with those in the NIST library provided by the GC-MS. Study of ASH-2c fraction allowed the isolation of the flavone sorbifolin (4) and two glycosylated flavones: cirsimarin (3) and sorbifolin-6-O-ˇ-glucopyranoside (5), which were identified by comparison of their spectroscopic data with those reported in the literature (Fernandes et al, 2008;Lin et al, 2006;Yim et al, 2003). Sorbifolin has been isolated from the species Astragalus annularis (El-Hawiet et al, 2010) and Pterogyne nitens from Fabaceae family (Fernandes et al, 2008); Heterotheca subaxilaris (Morimoto et al, 2009) and Pulicaria uliginosa (Eshbakova et al, 1996) from Asteraceae; and R. tuberosa from Acanthaceae (Lin et al, 2006). Regarding its biological activities, this flavonoid has been tested in antimicrobial, antioxidant, and myeloperoxidase bioassays, resulting in moderate to null activity (El-Hawiet et al, 2010;Fernandes et al, 2008).…”

In vitro nematicidal activity of natural and semisynthetic cadinenes from Heterotheca inuloides against the plant‐parasitic nematode Nacobbus aberrans (Tylenchida: Pratylenchidae)

“…The findings show that the acetonic extract and some cadinanes of H. inuloides represent an alternative for the control of N. aberrans . However, the investigation of the phytotoxic effect in the crops should be evaluated, considering that compounds with cadinane skeleton present in the related H. subaxillaris possess strong inhibitory activity of plant growth against Agrostis stolonifera L. and Lactuca sativa L. seedlings . Some compounds of H. inuloides were toxic to the brine shrimp Artemia salina so it is necessary to evaluate the potential risk of exposure to non‐target terrestrial and aquatic invertebrates.…”

“…Products derived from plants such as extracts and natural products, including phenolics, flavonoids, quinones, terpenes, alkaloids, cyanogenic glycosides, glucosinolates and isothiocyanates, limonoids, piperamides, and saponins among others, showed activity against PPN, causing a reduction in the number of adults, the egg masses hatching, and juvenile motility . Some species of the genus Heterotheca showed biocidal activities against pests of agricultural and livestock importance . H. inuloides , commonly known as ‘Mexican arnica’, is an endemic species distributed mainly in the central region of Mexico in temperate and tropical forests, grasslands and xerophilous scrubs.…”

Bioactivity-guided isolation of anti-hepatitis B virus active sesquiterpenoids from the traditional Chinese medicine: Rhizomes of Cyperus rotundus

“…2). The known compounds 6-37 were identified as cyperenol (6) (Jacobs et al, 1987), cyperenoic acid (7) (Boonyarathanakornkit et al, 1988), cyperotundone (8) (Hikino et al, 1965(Hikino et al, , 1966, sugeonol (9) (Hikino et al, 1968a), scariodione (10) (Hikino et al, 1968a), sugetriol triacetate (11) (Xu et al, 2009), α-cyperone (12) (Naya et al, 1990), (4aS, 7S),-7-hydroxy-1, 4a-dimethyl-7-(prop-1-en-2-yl),-4, 4a, 5, 6, 7, 8-hexahydronaphthalen-2 (3H),-one (13) (Nozaki et al, 1995), (4aS, 7S, 8R),-8-hydroxy-1, 4a-dimethyl-7-(prop-1-en-2-yl), -4, 4a, 5, 6, 7, 8-hexahydronaphtha-len-2 (3H), -one (14) (Nozaki et al, 1995), cyperol (15) (Sun et al, 2000), 1β-hydroxy-α-cyperone (16) (Sanz and Marco, 1990), 10-epieudesm-11-ene-3β, 5α-diol (17) (Huffman et al, 1980), 3β-hydroxyilicic alcohol (11 (13),-eudesmene-3, 4, 12-triol) (18) (Zhang et al, 2007), cyperusol C (19) (Xu et al, 2004), α-corymbolol (20) (Nyasse et al, 1988), 3β, 4α-dihydroxy-7-epieudesm-11 (13), -ene (21) (Ahmed et al, 1998), 2-oxo-α-cyperone (22) (Murai et al, 1982), 7α (H), 10β-eudesm-4-en-3-one-11,12-diol (23) (Hikino et al, 1975), rhombitriol (24) (Rukachaisirikul et al, 2005), 7-epi-teucrenone (25) (Fraga et al, 1995), α-rotunol (26) (Hiking et al, 1971), nootkatone (27) (Gliszczyńska et al, 2011), 12-hydroxynootkatone (28) , oxyphyllol C (29) (Morikawa et al, 2002), 5-hydroxylucinone (30) (Chiu et al, 2001), oplopanone (31) (Carvalho et al, 2003), 10-hydroxyamorph-4-en-3-one (32) (Wu et al, 2007), cyperusol D (33) (Xu et al, 2004), 2-hydroxy-14-calamenenone (34) (Morimoto et al, 2009), 1-isopropyl-2, 7 dimethylnaphthalene (35) (Qin ...…”