Five new cyclic organosulfur compounds, foliogarlic disulfanes A 1 (1), A 2 (2), and A 3 (3) and foliogarlic trisulfane A 1 (4) and A 2 (5), were isolated from the leaves of Allium sativum (garlic). The chemical structures of these compounds were elucidated on the basis of physicochemical evidence including Nuclear Magnetic Resonance (NMR) and Mass Spectrometry (MS). Compounds 1-5 were obtained as complex compounds with disulfane or trisulfane and tetrahydro-2H-difuro[3,2-b:2 ′ ,3 ′ -c]furan-5(5aH)-one. In addition, the hypothetical biosynthetic pathways of these compounds were suggested.
Sulfur-containing compounds, such as cyclic compounds with a vinyl sulfane structure, exhibit a wide range of biological activities including anticancer activity. Therefore, the development of efficient strategies to synthesize such...
Five young researchers presented their studies in the field of traditional Japanese herbal medicine (Wakan‐yaku) at the second annual young researcher forum entitled “Growing Research Buds by Young Investigators,” held during the annual meeting of the Japan Society of Medical and Pharmaceutical Sciences for Traditional Medicine 2021. Mr. Yoneda presented exploratory research on new pharmaceutical seed compounds from garlic (Allium sativum). Dr. Yang investigated whether diosgenin promoted proper axonal regeneration in the brain using a mouse model of Alzheimer's disease. Her study clarified the molecular mechanisms of the diosgenin‐driven accurate pathfinding of injured axons. Mr. Nishihara presented his research on promoting the effective utilization of Phellodendron trees in Nara Prefecture. His research team evaluated the possibility of short‐term cultivation, screened for useful components in the leaves. Dr. Ogawa used the Japanese Adverse Drug Event Report (JADER) database, which contains reports of side effects associated with drug treatment, to demonstrate the effectiveness of hokizai in reducing side effects, particularly those of anticancer drugs. Dr. Kitamura reported that Cnidium monnieri (L.) Cusson fruit extract and the isolated active ingredients, osthol and imperatorin, strongly inhibited the activity of furin‐like enzymes. Further screening indicated that root extracts of Paeonia lactiflora Pall. and Scutellaria baicalensis Georgi suppressed cell syncytial formation by the S protein. The event was held online, and we had 86 participants. We can improve this forum in terms of format, frequency, and publicity activities; however, we hope to hold this forum in 2022 and in the future.
Acylated oleanane-type triterpenes named chakasapogenins I (1), II (2), and III (3) were isolated from the hydrolysis product of the extract obtained from the flower buds of Camellia sinensis. The chemical structures of new triterpenes were elucidated on the basis of chemical and physicochemical evidence. chakasapogenin III (3) inhibited nitric oxide (NO) production in lipopolysaccharide-(LPS) activated RAW264.7 macrophages. In addition, R 1-barrigenol (7) showed antiviral effect at 10M against herpes simplex virus type-1 (HSV-1).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.