Morin is a flavonol having 2',4'-dihydroxy group on B-ring identified especially in Moraceae plants. While morin is widely known, its glycosides are relatively rare. To the best of our knowledge, morin-3-O-glucoside (1) was first reported in 2008. However, the reported chemical shift values of 1 were unsatisfactory with those of the aglycone, morin, which is rather similar to quercetin-3-O-glucoside (2). Therefore, we prepared morin-3-O-glucoside (1) by microbial transformation of morin with Cunninghamella sp., and the NMR assignment was reinvestigated. The microbial culture also produced another compound (3). The NMR and MS analyses of 3 revealed it as a novel compound, morin-2'-O-glucoside (3).In this study, the revision of the NMR assignment of morin-3-O-glucoside (1), and the preparation and structural elucidation of a novel compound, morin-2'-O-glucoside (3), were described.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s11418-023-01771-1 | DOI Listing |
Radiology
December 2024
From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43 gil, Songpa-Gu, Seoul 05505, Korea (H.J.J., S.H.C., S.J.C., J.H.B., H.J.W., Y.M.S.); University of Ulsan College of Medicine, Seoul, Korea (S.W.); and Liver Imaging Group, Department of Radiology, University of California- San Diego, San Diego, Calif (C.B.S.).
Background Prediction of the tumor growth rates is clinically important in patients with hepatocellular carcinoma (HCC), but previous studies have presented conflicting results and generally lacked radiologic evaluations. Purpose To evaluate the percentage of rapidly growing early-stage HCCs in each Liver Imaging Reporting and Data System (LI-RADS) category and to identify prognostic factors associated with rapid growth. Materials and Methods Retrospective study of patients with risk factors for HCC and those with surgically proven early-stage HCC who underwent two or more preoperative multiphasic CT or MRI examinations between January 2016 and December 2020.
View Article and Find Full Text PDFSci Data
December 2024
CAS Key Laboratory of Behavioral Science, Institute of Psychology, Beijing, 100101, China.
How emerging adulthood, a period particularly susceptible to the onset of mental disorders, responds to acute aerobic exercise effects on mood and brain remains an open question. A challenge in addressing this question is the scarcity of open data derived from scientific intervention paradigms. We recruited 83 healthy volunteers aged 17 to 24, who were randomly assigned to either an exercise group or a control group.
View Article and Find Full Text PDFCarbohydr Res
December 2024
Beijing Institute of Radiation Medicine, Beijing, 100850, China; Shandong University of Traditional Chinese Medicine, Jinan, 250355, China. Electronic address:
A heptasaccharide was isolated from an active fraction of Trillium tschonoskii using HILIC and high-temperature PGC chromatography methods. UHPLC-Q/TOF-MS analysis gave this oligosaccharide a degree of polymerization (DP) of 7 and MS/MS showed that it has a six-carbon aldehyde glucan structure with the possible chain 1 → 4 connected. The structure was determined by series 1D and 2D NMR in two solvents DO and DMSO‑d.
View Article and Find Full Text PDFProstate
December 2024
Urology Unit, Department of Medical, Oral and Biotechnological Sciences, 'G. d'Annunzio University', Chieti, Italy.
Introduction: The introduction of multiparametric prostate magnetic resonance imaging (mpMRI) has revolutionized prostate cancer (PCa) diagnosis, enhancing the localization of clinically significant prostate cancer (csPCa) and guiding targeted biopsies. However, significant disparities in the execution, interpretation, and reporting of prostate MRI examinations across centers necessitate greater standardization and accuracy. This study compares the diagnostic efficacy of mpMRI from academic and nonacademic centers in detecting csPCa and identifies factors associated with csPCa detection.
View Article and Find Full Text PDFEur Radiol
December 2024
Canisius Wilhelmina Hospital, Weg door Jonkerbos 100, 6532 SZ, Nijmegen, The Netherlands.
Objectives: Quality control in breast cancer screening programmes has been subject of several studies. However, less is known about the clinical diagnostic work-up in recalled women with a suspicious finding at screening mammography. The current study focuses on interhospital differences in diagnostic work-up strategies.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!