New glucosides of a 4-hydroxy-5-methylcoumarin and a dihydro-α-pyrone from Gerbera jamesonii hybrida

S NAGUMO, T TOYONAGA, T INoUE… - Chemical and …, 1989 - jstage.jst.go.jp
Two new glucosides, 2, CmHlBOg, mp 202—203 C,[az] f, 0—96.4 (MeOH) and gerberin (5),
C12H1808'tall?+ 11.2 (MeOH), were isolated from the aerial part of Gerbera jamesonii …

[引用][C] 薇菜的生物学特性及薇菜的加工与利用

肖箫, 何义发 - 湖北民族学院学报(自然科学版), 2012

Phytochemical constituents from the rhizomes of Osmunda japonica Thunb and their anti-oxidant activity

K wan Woo, JK Jung, HJ Lee, TM Kim… - Natural Product …, 2017 - synapse.koreamed.org
Abstract Eleven compounds (1–11) were isolated from the rhizomes of Osmunda japonica,
and their structures were elucidated based on 1 H, 13 C-NMR and LC-IT-TOF MS data. Of …

An efficient strategy for the synthesis of 5-hydroxyalkylbutan-4-olides from d-mannitol: total synthesis of (−)-muricatacin

M Chandrasekhar, KL Chandra, VK Singh - Tetrahedron letters, 2002 - Elsevier
An efficient strategy for the synthesis of 5-hydroxyalkylbutan-4-olides from d-mannitol: total
synthesis of (−)-muricatacin - ScienceDirect Skip to main contentSkip to article Elsevier logo …

The glycosidic precursor of (Z)-5-ethylidene-2 (5H)-furanone in Halocarpus biformis juvenile foliage

NB Perry, MH Benn, LM Foster, A Routledge… - Phytochemistry, 1996 - Elsevier
A new glycosidic lactone,(5R, 6R)-5-(1-hydroxyethyl)-2 (5H)-furanone β-d-glucopyranoside,
has been identified as the principal precursor of (Z)-5-ethylidene-2 (5H)-furanone in juvenile …

Efficient preparation of 3-substituted-furan-2 (5H)-ones and their direct vinylogous aldol addition

M Bella, G Piancatelli, A Squarcia - Tetrahedron, 2001 - Elsevier
The deprotonation of 3-substituted-furan-2 (5H)-ones 1, obtained via the hydrolysis of 3-
substituted-2, 5-dihydro-2, 5-dimethoxyfurans, affords in the reaction with both aromatic and …

Alkyne‐Mediated Approach to the Synthesis of (4R,5R)‐5‐Hydroxy‐4‐decanolide and (−)‐Muricatacin

C Raji Reddy, D Suman… - Helvetica Chimica …, 2015 - Wiley Online Library
The asymmetric synthesis of two naturally occurring 5‐hydroxy‐γ‐butyrolactones,(4R, 5R)‐5‐
hydroxy‐4‐decanolide (1a) and (−)‐muricatacin (2), is described using a general alkyne …

Synthesis of γ-and δ-Lactone Natural Products by Employing a trans–cis Isomerization/Lactonization Strategy

M Ono, K Kato, H Akita - Chemical and Pharmaceutical Bulletin, 2013 - jstage.jst.go.jp
Alkaline hydrolysis of 4-hydroxy-or/and 5-hydroxy-(2E)-alkenoate followed by acid treatment
gave the corresponding (2E)-alkenoic acids which were subjected to lactone formation …

Phytochemical Study of Ixora finlaysoniana wall. Ex. g. don growing in Egypt

FMM Darwish, ZZ Ibraheim - Bulletin of Pharmaceutical …, 2003 - bpsa.journals.ekb.eg
A hydrocarbon alcohol, nonacosanol (1),-amyrin (2) and-sitosterol (3) were isolated from
the n-hexane fraction of the methanolic extract of Ixora finlaysoniana. From the chloroform …

[HTML][HTML] Two new polyketides from Rhodiola tibetica endophytic fungus Penicillium sp. HJT-A-6

D Xiao, X Li, X Zhang, N Jiang, D Luosang… - Chinese Herbal …, 2024 - Elsevier
Objective To study bioactive compounds from the endophytic fungus Penicillium sp. HJT-A-6
isolated from stem of Rhodiola tibetica, and evaluate its allelopathic activity. Methods The …