Natural Products and Bioprospecting
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Highly Oxygenated Limonoids and Lignans from Phyllanthus flexuosus
Natural Products and Bioprospecting - Tập 4 - Trang 233-242 - 2014
Two new highly oxygenated limonoids, flexuosoids A (1) and B (2), and three new
arylnaphthalene lignan glycosides, phyllanthusmins D–F (3–5), were isolated from
the roots of Phyllanthus flexuosus, in addition to three known lignans,
phyllanthusmin C, arabelline, and (+)-diasyringaresinol. Their structures were
elucidated on the basis of detailed spectroscopic analysis and chemical methods.
Compoun...
Antifungal alkaloids from Mahonia fortunei against pathogens of postharvest fruit
Natural Products and Bioprospecting - Tập 13 - Trang 1-12 - 2023
Postharvest pathogens can affect a wide range of fresh fruit and vegetables,
including grapes, resulting in significant profit loss. Isoquinoline alkaloids
of Mahonia fortunei, a Chinese herbal medicine, have been used to treat
infectious microbes, which might be effective against postharvest pathogens. The
phytochemical and bioactive investigation of this plant led to the isolation of
18 alkaloid...
New seco-anthraquinone glucoside from the roots of Rumex crispus
Natural Products and Bioprospecting - Tập 12 - Trang 1-9 - 2022
A new seco-anthraquinone, crispuside A (1), and three new
3,4-dihydronaphthalen-1(2H)-ones, napthalenones A-C (2–4), were isolated from
the roots of Rumex crispus L., along with 10 known anthraquinones (6–14) and
naphthalenone (5). Their structures were fully determined by extensive
spectroscopic analyses, including ECD, and X-ray crystallography in case of
compound 5, whose absolute configuration...
Artificial Triterpenoid Fatty Acid Ester Isolated From the Leaves of Phytolacca icosandra L
Natural Products and Bioprospecting - - 2020
Abstract The methanol extract form the leaves of Phytolacca icosandra L.,
afforded the unprecedented artificial triterpenoid fatty acid ester 1 derived
from the new natural triterpenoid phytolaccagenic acid 3-O-myristate (1a), along
with the three known triterpenoids serjanic, acinosolic and phytolaccagenic acid
(2 – 4). Their structures were stablished by HR-EI-MS, 1D and 2D NMR techniques.
The p...
Triterpenoids and Sterols from the Leaves and Twigs of Melia azedarach
Natural Products and Bioprospecting - Tập 4 Số 3 - Trang 157-162 - 2014
Two new triterpenoids (1 and 2) and a new sterol (3), together with six known
constituents (4–9), were isolated from the leaves and twigs of Melia azedarach.
Their chemical structures were elucidated on the basis of spectroscopic
analysis.
Diverse Polyphenols from Hypericum faberi
Natural Products and Bioprospecting - Tập 9 Số 3 - Trang 215-221 - 2019
Abstract Six new polyphenols with different isoprenylated xanthones,
isoprenylated acylphloroglucinols, and chromone architectures, hyperfaberols A–F
(1–6), were isolated from the whole plants of Hypericum faberi along with seven
other related known compounds. In which hyperfaberols A/B (1/2) and 12–13 were
isoprenylated xanthones, hyperfaberols C–E (3–5) and 8–11 were seven
isoprenylated acylphlo...
(±)-Evodiakine, A Pair of Rearranged Rutaecarpine-Type Alkaloids From Evodia rutaecarpa
Natural Products and Bioprospecting - Tập 6 - Trang 291-296 - 2016
(±)-Evodiakine (1a and 1b), a pair of rearranged rutaecarpine-type alkaloids
with an unprecedented 6/5/5/7/6 ring system, were isolated from the nearly ripe
fruits of Evodia rutaecarpa. Separation of the enantiomers have been achieved by
chiral HPLC column. The structures of (±)-evodiakine were unambiguously
elucidated by 1D and 2D NMR spectra, mass spectrometry, and single-crystal X-ray
diffracti...
New amide alkaloids from Piper longum fruits
Natural Products and Bioprospecting - Tập 3 - Trang 277-281 - 2013
Three new amide alkaloids piperlongumamides A-C (1–3), together with 12 known
ones (4–15), were isolated from the fruits of Piper longum. The structures of
the new isolates were determined using spectroscopic data analyses. Cytotoxic
activity of these amides against HL-60 (human leukemia), A-549 (human lung
cancer), MCF-7 (human breast cancer), SMMC-7721 (human liver cancer) and SW480
(human recta...
Plants Used as Antihypertensive
Natural Products and Bioprospecting - Tập 11 - Trang 155-184 - 2020
Hypertension is a critical health problem and worse other cardiovascular
diseases. It is mainly of two types: Primary or essential hypertension and
Secondary hypertension. Hypertension is the primary possibility feature for
coronary heart disease, stroke and renal vascular disease. Herbal medicines have
been used for millions of years for the management and treatment of hypertension
with minimum s...
Steroids and Sesquiterpenes From Cultures of the Fungus Phellinus igniarius
Natural Products and Bioprospecting - Tập 5 - Trang 17-22 - 2014
Two new steroids, 3α,17α,19,20-tetrahydroxy-4α-methylpregn-8-ene (1) and
3α,12α,17α,20-tetrahydroxy-4α-methylpregn-8-ene (2) and three new
sesquiterpenoids, 12-hydroxy-α-cadinol (3), 3α,12-dihydroxy-δ-cadinol (4), and
3α,6α-dihydroxyspiroax-4-ene (5), have been isolated from cultures of the fungus
Phellinus igniarius. Their structures were characterized based on extensive
spectroscopic data. In pr...
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