A short and convergent synthesis of the myxobacterial antibiotic melithiazole C is described featuring a highly E-selective cross-metathesis as the key step.
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http://dx.doi.org/10.1021/ol701459j | DOI Listing |
ChemMedChem
January 2025
Kobe Pharmaceutical University: Kobe Yakka Daigaku, Laboratory of Microbial Chemistry, 4-19-1 Motoyamakita, Higashinada, 6588558, Kobe, JAPAN.
The antiausterity strategy in anticancer drug discovery has attracted much attention as a way to exterminate cancer cells under nutrient deprived conditions which are commonly found in solid tumors. These tumors under low nutrient stress are known to be malignant and often resist conventional drug therapy. As a potential drug candidate, we focused on the meroterpenoid natural product callistrilone O which has demonstrated extremely potent antiausterity properties toward PANC-1 pancreatic carcinoma in vitro.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, CH-1015 Lausanne, Switzerland.
In the dyotropic rearrangement of molecules with semiflexible structures, characterized by a freely rotating static C-C bond, the formation of a mixture of products is common due to the coexistence of several energetically comparable conformers. Herein, we report that it is possible to modulate the shifting groups by adjusting the metal's coordination sphere in Pd-based dyotropic rearrangement. In the presence of a catalytic amount of Pd(II) salt, the reaction of γ-hydroxyalkenes or γ,δ-dihydroxyalkenes with Selectfluor affords fluorinated tetrahydropyranols or 6,8-dioxabicyclo[3.
View Article and Find Full Text PDFHealth Psychol Behav Med
January 2025
Manchester Centre for Health Psychology, Division of Psychology and Mental Health, School of Health Sciences, University of Manchester, Manchester, UK.
Introduction: The present article describes the processed data generated in a qualitative interview study and template analysis. Many women find the experience of being recalled and receiving a false-positive breast screening test result to be distressing. The interview study aimed to understand breast screening healthcare professionals' (HCPs) experiences of providing care during the recall process and when receiving false-positive screening test results, including their communication with women around false-positive screening test results.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
December 2024
the First Clinical Medical College, Nanjing University of Chinese Medicine Nanjing 210023, China Affiliated Hospital of Nanjing University of Chinese Medicine Nanjing 210029, China Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of Tumor Nanjing 210023, China.
This study systematically reviewed the literature on the prevention and treatment of colorectal cancer(CRC) with traditional Chinese medicine(TCM), aiming to present a more intuitive and concise overview of existing evidence. Four major Chinese databases, including CNKI, Wanfang, VIP, and SinoMed, were searched for randomized controlled trial(RCT) on TCM treatment of CRC. The retrieval period was from database inception to August 1, 2023.
View Article and Find Full Text PDFJ Org Chem
January 2025
State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 Gansu, P. R. China.
The asymmetric total syntheses of sarglamides A, C, and E in concise and protecting group free fashion is disclosed. Key steps involve an -selective Diels-Alder reaction to construct the bicyclo[2.2.
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