نتایج جستجو برای: 5 o dirhamnosid 3 butanoat 7 hydroxyflavone
تعداد نتایج: 3176463 فیلتر نتایج به سال:
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Perilla frutescens is an annual herb of the mint family native to East Asia. Polyphenols present in perilla have various structural varieties with large diversity of biological activities. It is direct influence the quality of perilla plant and their potential functions. Some of these products have been studied and proven to be effective source of phenolic antioxidants. The aqueous extract cont...
Chromatographic separation of a 70% aqueous methanol extract (AME) of Pongamia pinnata (Linn.) Pierre (Leguminosae) leaves has led to the isolation of two new isoflavonoid diglycosides, 4'-O-methyl-genistein 7-O-beta-D-rutinoside (2) and 2',5'-dimethoxy-genistein 7-O-beta-D-apiofuranosyl-(1"'-->6")-O-beta-D-glucopyranoside (6), and a new rotenoid, 12a-hydroxy-alpha-toxicarol (5), together with ...
در این پژوهش، تعدادی ترکیب فسفر-کلر با فرمول های xc(o)nhp(o)cl2 x]=cf3، ccl3، cf2cl و[ch2cl ، 4-ch3-c6h4nhp(o)cl2 ، 4-ch3-c6h4s(o)2nhp(o)cl2 و [4-ch3-c6h4nh]2p(o)cl تهیه و برای سنتز فسفر آمیدهای با فرمول ccl3c(o)nhp(o)y ] [nh(ch2)3nh=y (1) و [nhch2c(ch3)2ch2nh=y] (2)، [h2n(ch2ch3)2][4-ch3-c6h4s(o)2nhp(o)n(ch2ch3)2].h2o (3)، 4-ch3-c6h4nhp(o)[n(ch3)(ch2c6h5)]2 (4)، [4-ch3-c6h4nh]2p(o)op(o)[nhc6h4...
Three new lignans (1 - 3), together with four new thymoquinol glycosides (4 - 7), were isolated from 70%-EtOH extract of the rattan stems of Schisandra chinensis. The structures of 1 - 7 were elucidated by detailed spectroscopic analyses, and these new compounds were identified as pinobatol-9-O-β-d-glucopyranoside (1), 1,2,13,14-tetramethoxydibenzocyclooctadiene 3,12-O-β-d-diglucopyranoside (2)...
The rhizomes of Zingiber spectabile yielded a new dimeric flavonol glycoside for which the name kaempferol-3-O-(4″-O-acetyl)-α-L-rhamnopyranoside-(I-6,II-8)-kaempferol-3-O-(4″-O-acetyl)-α-L-rhamnopyranoside; spectaflavoside A (1) was proposed, along with kaempferol and its four acetylrhamnosides (2-6), demethoxycurcumin (7) and curcumin (8). The structure of spectaflavoside A was elucidated by ...
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