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
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 tr... ...
Natural Products and Bioprospecting - - 2020
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
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... ...
Natural Products and Bioprospecting - Tập 9 Số 3 - Trang 215-221 - 2019
(±)-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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