Total synthesis of marine secondary metabolite nafuredin B has been achieved for the first time using a convergent strategy. Sharpless epoxidation followed by acid catalyzed epoxide opening were adopted to install the tetrasubstituted hydroxy center, whereas the iterative Julia-Kocienski olefination, Wittig olefination and HWE olefination afforded the olefin bonds. Ring closing metathesis in the presence of a free tetrasubstituted hydroxy group provided the unsaturated δ-lactone moiety. This synthetic study provided unambiguous structural confirmation of the isolated nafuredin B.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d0ob00370k | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Higher abdominal fat area associates with lower donor kidney function before and after living kidney donation.
Sci Rep
December 2024
Department of Surgery, Division of Transplant Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Central body fat distribution affects kidney function. Abdominal fat measurements using computed tomography (CT) may prove superior in assessing body composition-related kidney risk in living kidney donors. This retrospective cohort study including 550 kidney donors aimed to determine the association between CT-measured abdominal fat areas and kidney function before and after donor nephrectomy.
View Article and Find Full Text PDFEffects of water-fertiliser coupling on the photosynthesis and quality of Lycium barbarum based on predicted crop evapotranspiration (ET).
Sci Rep
December 2024
School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia, 750021, China.
Lycium barbarum is an important economic crop in the arid region of Northwest China, and the regulation of irrigation and fertilisation is an important way to improve the quality and yield of Lycium barbarum. To explore the effects of water-fertiliser coupling on photosynthesis, quality and yield of Lycium barbarum under irrigation methods based on predicted crop evapotranspiration (ET), ET was calculated via reference evapotranspiration (ET) predicted on the basis of public weather forecasts, and the irrigation water volume was determined as a proportion of this ET. A field experiment was conducted via a completely randomised experimental design with five irrigation water volumes (W0 (100% ET), W1 (90% ET), W2 (80% ET), W3 (70% ET) and W4 (65% ET)) and three fertiliser application rates (high fertiliser (FH), medium fertiliser (FM) and low fertiliser (FL)).
View Article and Find Full Text PDFEffect of the initial glucose concentration on the performance of ice wine fermentation of Vidal grape juice.
Sci Rep
December 2024
College of Biological Sciences and Technology, YiLi Normal University, Yining, 835000, People's Republic of China.
Ice wine is produced from concentrated grape juice obtained by the natural freezing and pressing of grapes. The high sugar content of this juice has an impact on fermentation. To investigate the impact of the initial sugar concentration on the fermentation of ice wine, the initial sugar concentration of Vidal ice grape juice was adjusted to 370, 450, 500 and 550 g/L by the addition of glucose.
View Article and Find Full Text PDFDynamic transcriptomics unveils parallel transcriptional regulation in artemisinin and phenylpropanoid biosynthesis pathways under cold stress in Artemisia annua.
Sci Rep
December 2024
National & Local United Engineering Laboratory for Chinese Herbal Medicine Breeding and Cultivation, School of Life Sciences, Jilin University, Changchun, Jilin Province, People's Republic of China.
Cold stress, a major abiotic factor, positively modulates the synthesis of artemisinin in Artemisia annua and influences the biosynthesis of other secondary metabolites. To elucidate the changes in the synthesis of secondary metabolites under low-temperature conditions, we conducted dynamic transcriptomic and metabolite quantification analyses of A. annua leaves.
View Article and Find Full Text PDFCaftaric acid attenuates kidney and remote organ damage induced by renal ischemia-reperfusion injury.
Sci Rep
December 2024
Department of Pathology, Faculty of Veterinary, Atatürk University, Erzurum, Turkey.
Oxidative stress and inflammation are indispensable components of ischemia-reperfusion (IR) injury. In this study, we investigated the effects of low and high doses of caftaric acid (CA) on reducing kidney and remote organ damage induced by IR. We divided Wistar rats into four groups: sham, IR, low (40 mg/kg body weight (BW)), and high (80 mg/kg BW) CA groups.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!