Results 161 to 170 of about 7,063 (213)

Synthesis of Anhydro-dc-Tetracyclic Saxitoxin Via a Photoinduced Cycloaddition. [PDF]

JACS Au
Fang R, Jiao Y, Xia T, Liu J, Luo T.
europepmc   +1 more source

One-pot two-component synthesis of halogenated xanthone, 3-o substituted xanthone, and prenylated xanthone derivatives as aromatase inhibitors

Results in Chemistry, 2023
This study describes the synthesis, characterization, and biological activities of halogenated xanthone, 3-O substituted xanthone, and prenylated xanthone derivatives. The molecular structures of these compounds were identified using 1 H NMR, 13C NMR,
Nadiah Mad Nasir, Muhammad Alif Mohammad Latif, Fatin Farhana Baharuddin   +2 more
exaly   +2 more sources

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Novel xanthones from Garcinia mangostana, structures of BR-xanthone-A and BR-xanthone-B

Phytochemistry, 1988
Abstract The chemical examination of the dry fruit hulls of Garcinia mangostana yielded, in addition to known xanthones, two new xanthones, a bis-pyrano xanthone, BR. xanthone- A and 1-methoxy-2,4,5-trihydroxyxanthone, BR-xanthone-B. Evidence of their structures is presented.
Krishnamoorthi Balasubramanian, Krishnamoorthi Rajagopalan   +1 more
exaly   +2 more sources

Xanthones as Potential Antioxidants

Current Medicinal Chemistry, 2013
Xanthones (dibenzo-γ-pyrones) constitutes an important class of oxygenated heterocycles and occur as secondary metabolites in plants and microorganisms. They are known for various biological activities such as antioxidant, monoamine oxidase inhibitor, antihypertensive, hepatoprotective, antithrombotic, antifungal and anticancer.
S S, Panda, M, Chand, R, Sakhuja, S C, Jain   +3 more
openaire   +2 more sources

Synthesis of Xanthones: An Overview

Current Medicinal Chemistry, 2005
Among the known synthetic routes to obtain xanthones, the Grover, Shah, and Shah reaction, the cyclodehydration of 2, 2-dihydroxybenzophenones and electrophilic cycloacylation of 2-aryloxybenzoic acids are the most popular methods. Due to important biological applications of xanthones, some synthetic strategies leading to more complex derivatives ...
M E, Sousa, M M M, Pinto
openaire   +2 more sources

Xanthones-A Structural Perspective

Current Medicinal Chemistry, 2005
Xanthones, synthesized or isolated from a natural source, display a wide range of biological and pharmacological activities. In a few cases, their chemical characterization has involved the structure elucidation by single crystal X-ray diffraction.
L, Gales, A M, Damas
openaire   +2 more sources

Xanthones of Comastoma pedunlulatum

China Journal of Chinese Materia Medica, 2010
The xanthones in the ethyl acetate extract of Comastoma pedunlulatum were investigated. The chromatographic and spectroscopic techniques were used to isolate and identify the constituents. Nine xanthones were isolated from the active parts of the ethyl acetate portion of the 70% ethanolic extract of C.
Yi, Yuan, Baosong, Cui, Ying, Zhang, Shuai, Li   +3 more
openaire   +2 more sources

Xanthone Analogue of Geiparvarin

Archiv der Pharmazie, 1985
AbstractThe synthesis and the pharmacological properties of the xanthone analogue of geiparvarin, a naturally occurring antitumor coumarin, are described.
P, Valenti, M, Recanatini, P, Da Re, W, Galimbeni, N, Avanzi, S, Filippeschi   +5 more
openaire   +2 more sources

Xanthone: A Promising Antimycobacterial Scaffold

Medicinal Chemistry, 2021
Background: Tuberculosis (TB) is one of the infectious diseases associated with high rate of morbidity and mortality and still remains one of the top-ten leading causes of human death in the world. The development of new anti-TB drugs is mandatory due to the existence of latent infection as well as the expansion of the resistant Mycobacterium ...
Tilal, Elsaman, Malik Suliman, Mohamed, Eyman Mohamed, Eltayib, Abualgasim Elgaili, Abdalla, Magdi Awadalla, Mohamed   +4 more
openaire   +2 more sources