scholarly journals Computed Regioselectivity and Conjectured Biological Activity of Ene Reactions of Singlet Oxygen with the Natural Product Hyperforin

2017 ◽  
Vol 93 (2) ◽  
pp. 626-631 ◽  
Author(s):  
Inna Abramova ◽  
Benjamin Rudshteyn ◽  
Joel F. Liebman ◽  
Alexander Greer
Author(s):  
Heribert Wefers ◽  
Paolo Di Mascio ◽  
Hong-Phuc Do-Thi ◽  
Dietrich Schulte-Frohlinde ◽  
Helmut Sies

1990 ◽  
Vol 112 (9) ◽  
pp. 3607-3614 ◽  
Author(s):  
M. Orfanopoulos ◽  
I. Smonou ◽  
Christopher S. Foote
Keyword(s):  

2021 ◽  
Vol 13 (19) ◽  
pp. 1679-1694
Author(s):  
Tejashri Chavan ◽  
Aaron Muth

α-Mangostin is a xanthone natural product isolated as a secondary metabolite from the mangosteen tree. It has attracted a great deal of attention due to its wide-ranging effects on certain biological activity, such as apoptosis, tumorigenesis, proliferation, metastasis, inflammation, oxidation, bacterial growth and metabolism. This review focuses on the key pathways directly affected by α-mangostin and how this varies between disease states. Insight is also provided, where investigated, into the key structural features of α-mangostin that produce these biological effects. The review then sheds light on the utility of α-mangostin as a investigational tool for certain diseases and demonstrate how future derivatives may increase selectivity and potency for specific disease states.


2003 ◽  
Vol 125 (5) ◽  
pp. 1319-1328 ◽  
Author(s):  
Daniel A. Singleton ◽  
Chao Hang ◽  
Michael J. Szymanski ◽  
Matthew P. Meyer ◽  
Andrew G. Leach ◽  
...  

2011 ◽  
Vol 7 ◽  
pp. 1475-1485 ◽  
Author(s):  
Charles Dylan Turner ◽  
Marco A Ciufolini

This is a review of our efforts toward the synthesis of a group of natural products that display noteworthy biological activity: Fredericamycin A, nothapodytine B, and topopyrones B and D. In each case, directed aromatic functionalization methodology greatly facilitated the assembly of the key molecular subunits.


2014 ◽  
Vol 18 (03) ◽  
pp. 188-199 ◽  
Author(s):  
Áron Roxin ◽  
Thomas D. MacDonald ◽  
Gang Zheng

Here we show the facile synthesis of 132-173-bacteriochlorophyllone a (12), with a distinct seven-membered exocyclic F-ring formed by 132-173-cyclization of bacteriopheophorbide a(16). This is the latest reported bacteriochlorin with such an exocyclic F-ring since 1975 (132-173 cyclobacteriopheophorbide a-enol, 11), and is an analog of previously described natural exocyclic F-ring-containing porphyrins (1–4) and chlorins (5–10). The structure of 12 was confirmed using a combination of 1D 1 H NMR, 2D COSY 1 H NMR, Jmod 13 C NMR and HRMS analysis. The biological activity of 12 was explored, and we found that this compound does not possess strong antioxidant activity like its natural product counterparts, but is a capable photosensitizer for photodynamic therapy.


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