WebRepeated column chromatography of the EtOAc-soluble fraction of the aerial parts of Dodonaea viscosa led to the isolation of two new modified clerodanes, methyl … WebCertain species secrete on hairs of the “costal fringe,” a specialized organ on their hindwings, a novel γ-lactone structurally related to the unusual branched-chain acids …
The Isolation of Anti-protozoal Compounds from Libyan …
WebMar 26, 2024 · Five new clerodane diterpenoids along with ten known compounds were isolated from the underground parts of Solidago altissima L. Compounds 1–4 were rare ent-neo-clerodanes with the cis A/B ring and a trans-configuration between the methyl groups at C-8 and C-9.Compound 5 was identified as trans-neo-clerodane.Revised stereochemical … Webthree di-terpenes, a hautriwaic lactone, an alcohol, and a hemiacetal, Sg4 (hR F hR F 58) solida - goic acid A, and Sg6 (hR F 37) solidagoic acid B. Fig. 1 HPTLC–A. scheri bioautograms of 13 root extract samples (Table 1) from the four Solidago species S. gigantea (Sg), S. canadensis (Sc), S. vir-gaurea (Sv), and S. graminifolia (Sgr ... how to cite national quality standards
High-performance thin-layer chromatography–direct …
WebJul 1, 2024 · Three unprecedented dimeric clerodane diterpenoids, dodovisdimers A−C (1–3), along with six known clerodane monomers (4–9), were isolated from Dodonaea viscosa.Compounds 1–3 may be biosynthetically formed via an intermolecular Diels-Alder [4+2] cycloaddition between the coexisting monomers 4–7.The structures of these … WebApr 10, 2012 · The aim of this study was to identify an anti-inflammatory compound from D. viscosa leaves. The structure of this bioactive substance was elucidated by IR and NMR studies, which indicated that this natural product corresponds to hautriwaic acid (HA). This diterpene exhibited good anti-inflammatory activity in 12-O-tetradecanoylphorbol 13 … WebDec 1, 2009 · Hautriwaic acid lactone (9) is quite similar to the diterpene acid (10), differing mainly at the functional groups of C-3, C-4, and C-5. Taking their antileishmanial activities into account, it is suggested that the lactone ring present in compound 9 may improve the antileishmanial activity of clerodane diterpenes, since compound 10 was inactive. how to cite news article chicago footnote