Results 101 to 110 of about 281 (158)

NOVEL THERAPEUTIC AND DIAGNOSTIC APPLICATIONS OF HYPOCRELLINS AND HYPERICINS [PDF]

open access: yesPhotochemistry and Photobiology, 1995
AbstractHypocrellins and hypericins, structurally related plant pigments isolated fromHypocrella bambuaseandHypericumrespectively, are known photodynamic agents. This review summarizes certain significant advances in the photophysics, photochemistry and photobiology of these pigments in the last 2 years and discusses their prospects as novel ...
Z Diwu
exaly   +4 more sources

Glycoconjugated hypocrellin: synthesis of [(β-d-glucosyl)ethylthiyl]hypocrellins and photosensitized generation of singlet oxygen

open access: yesBiochimica Et Biophysica Acta - General Subjects, 1999
In order to improve the water solubility and specific affinity for malignant tumors of hypocrellin, glycoconjugated hypocrellins have been synthesized using an improved Königs-Knörr reaction from mercaptoethanol substituted hypocrellin B and 2,3,4,6-tetra-O-acetyl-alpha-D-glucopyranosyl bromide precursors.
Yu-Ying He, Jing-Yi An, Li-Jin Jiang
exaly   +4 more sources

Synthesis and Photocatalysis of AL Doped CdS Templated by Non-Surfactant Hypocrellins [PDF]

open access: yesProcedia Environmental Sciences, 2013
Non-surfactant hypocrellins (Hys) is a kind of photosensitizer with strong and broad absorption in visible light region, obtained by isolating from the fungus sacs of hypocrella bambusae. Previous studies have not yet addressed the use of hypocrellins as
Qilin Li, Jiaqiang Wang, Zhiying Yan
exaly   +2 more sources

Butylamino-demethoxy-hypocrellins and photodynamic therapy decreases human cancer in vitro and in vivo [PDF]

open access: yesBiochimica Et Biophysica Acta - Molecular Basis of Disease, 2001
2-Butylamino-2-demethoxy-hypocrellin A (BAHA) and B (BAHB) are new photosensitizers synthesized by a mild reaction of hypocrellins and butylamine. In BAHA and BAHB, the peri-hydroxylated perylenequinone structure of the parent hypocrellins is preserved ...
Yupei Zhao, Ziwei Liu, Manhua Zhang
exaly   +2 more sources

Conformation and tautomerism of hypocrellins. Revised structure of shiraiachrome A

open access: yesPerkin Transactions II RSC, 2001
Hypocrellins, natural perylenequinones from the fungi Hypocrella bambusae and Shiraia bambusicola, are being intensively studied for their photodynamic activity. As a recent paper reported the existence of a slow tautomeric equilibrium for hypocrellin A,
Lucio Merlini   +2 more
exaly   +2 more sources
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Biotechnological production and potential applications of hypocrellins

Applied Microbiology and Biotechnology, 2023
Hypocrellins (HYPs), a kind of natural perylenequinones (PQs) with an oxidized pentacyclic core, are important natural compounds initially extracted from the stromata of Hypocrella bambusae and Shiraia bambusicola. They have been widely concerned for their use as anti-microbial, anti-cancers, and anti-viral photodynamic therapy agents in recent years ...
Yunchang Xie, Du Zhu
exaly   +3 more sources

HYPOCRELLINS and THEIR USE IN PHOTOSENSITIZATION* [PDF]

open access: yesPhotochemistry and Photobiology, 1990
Abstract— Hypocrellins A and B are pigments which are isolated from parasitic fungi Hypocrella bambuase (B. et Br) sacc. and Shiraia bambusicola P. Heen found in the People's Republic of China (P.R.C.) and Sri Lanka respectively. These agents, which belong to the general class of perylene quinonoid pigments, have a long history as traditional medicinal
D, Zhenjun, J W, Lown
exaly   +3 more sources

Endophytic fungus Penicillium chrysogenum, a new source of hypocrellins

open access: yesBiochemical Systematics and Ecology, 2011
Hazrat Hussain   +2 more
exaly   +2 more sources

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