نتایج جستجو برای: Cyclic diarylheptanoid

تعداد نتایج: 98430  

Journal: :the iranian journal of pharmaceutical research 0
sabrin r. m. ibrahim department of pharmacognosy and pharmaceutical chemistry, faculty of pharmacy, taibah university, al madinah al munawarah 30078, saudi arabia. gamal a. mohamed department of pharmacognosy, faculty of pharmacy, al-azhar university, assiut branch, assiut 71524, egypt. amgad i. m. khedr edepartment of pharmacognosy, faculty of pharmacy, port said university, port said 42526, egypt bader m. aljaeid fdepartment of pharmaceutics and industrial pharmacy, faculty of pharmacy, king abdulaziz university, jeddah 21589, saudi arabia

a new cyclic diarylheptanoid namely alnuheptanoid b (3), along with four known cyclic diarylheptanoids: myricanone (1), (+)-s-myricanol (2), myricanone 5-o--d-glucopyranoside (4), and (+)-s-myricanol 5-o--d-glucopyranoside (5) were isolated from the etoac fraction of alnus japonica steud (family: betulaceae) stem bark. their structures were established by different spectroscopic analyses, as ...

Journal: :Molecules 2017
Edna Makule Thomas J Schmidt Jörg Heilmann Birgit Kraus

A methanolic extract of Morella salicifolia bark was fractionated by various chromatographic techniques yielding six previously unknown cyclic diarylheptanoids, namely, 7-hydroxymyricanol 5-O-β-d-glucopyranoside (1), juglanin B 3-O-β-d-glucopyranoside (2), 16-hydroxyjuglanin B 17-O-β-d-glucopyranoside (3), myricanone 5-O-β-d-gluco-pranosyl-(1→6)-β-d-glucopyranoside (4), neomyricanone 5-O-β-d-gl...

Amgad I. M. Khedr Bader M. Aljaeid Gamal Mohamed, Sabrin Ibrahim,

A new cyclic diarylheptanoid namely alnuheptanoid B (3), along with four known cyclic diarylheptanoids: myricanone (1), (+)-S-myricanol (2), myricanone 5-O--D-glucopyranoside (4), and (+)-S-myricanol 5-O--D-glucopyranoside (5) were isolated from the EtOAc fraction of Alnus japonica Steud (family: Betulaceae) stem bark. Their structures were established by different spectroscopic analyses, as ...

Amgad I. M. Khedr Bader M. Aljaeid Gamal Mohamed, Sabrin Ibrahim,

A new cyclic diarylheptanoid namely alnuheptanoid B (3), along with four known cyclic diarylheptanoids: myricanone (1), (+)-S-myricanol (2), myricanone 5-O--D-glucopyranoside (4), and (+)-S-myricanol 5-O--D-glucopyranoside (5) were isolated from the EtOAc fraction of Alnus japonica Steud (family: Betulaceae) stem bark. Their structures were established by different spectroscopic analyses, as ...

2006
Hiroyuki AKAZAWA Toshihiro AKIHISA Yosuke TAGUCHI Norihiro BANNO Risa YONEIMA Ken YASUKAWA

MAXIM. (Aceraceae) (Japanese name, Megusurino-ki) has been used as a folk medicine for the treatment of hepatic disorders and eye disease. The bark has been reported to contain various diarylheptanoid and phenolic compounds possessing several biological properties including hepatoprotective effects. In the course of our studies on the bioactive principles from natural sources, we have evaluated...

Journal: :Chemical & pharmaceutical bulletin 2002
Hisashi Matsuda Toshio Morikawa Jing Tao Kazuho Ueda Masayuki Yoshikawa

Three new diarylheptanoid glycosides, named (+)-S-myricanol 5-0-beta-D-glucopyranoside, myricanene A 5-O-alpha-L-arabinofuranosyl(1-->6)-beta-D-glucopyranoside, and myricanene B 5-0-alpha-L-arabinofuranosyl(1-->6)-beta-D-glucopyranoside, were isolated from the bark of Chinese Myrica rubra, together with twenty known compounds. The absolute stereostructures of the new diarylheptanoid glycosides ...

Journal: :Organic & biomolecular chemistry 2003
Gabriela Islas-Gonzalez Michèle Bois-Choussy Jieping Zhu

Using chiral quaternary ammonium hydroxide as base, cycloetherification of linear achiral diarylheptanoid 5, by way of an intramolecular SNAr reaction, provides enantiomerically enriched cyclophane 6 in good to excellent yield.

2017
Tiziana Esposito Francesca Sansone Silvia Franceschelli Pasquale Del Gaudio Patrizia Picerno Rita Patrizia Aquino Teresa Mencherini

Hazelnut shells, a by-product of the kernel industry processing, are reported to contain high amount of polyphenols. However, studies on the chemical composition and potential effects on human health are lacking. A methanol hazelnut shells extract was prepared and dried. Our investigation allowed the isolation and characterization of different classes of phenolic compounds, including neolignans...

2006
Toshihiro AKIHISA Yosuke TAGUCHI Ken YASUKAWA Harukuni TOKUDA Hiroyuki AKAZAWA Takashi SUZUKI Yumiko KIMURA

to Japan (Japanese name, Megusurino-ki) and its stem bark has been used as a folk medicine for the treatment of hepatic disorders and eye disease. The MeOH extract of its stem bark was reported to have hepatoprotective effects and ( )rhododendrol (11) was isolated as the active principle. The stem bark is reported to contain various diarylheptanoids and phenolic compounds, and some principal di...

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