Conjugate addition-enolate trapping, a strategy originally developed by Gilbert Stork, has become a powerful method for stereocontrolled ring construction. A key step in the synthesis of (-)-Clavirolide C (3) reported…
The enantioselective addition of allyl organometallics to carbonyls has become one of the workhorses of organic synthesis. PMID:24318587 Dennis Hall of the University of Alberta reports (J. Am. Chem. Soc.…
Cells to insoluble purple formazan dye crystals. One hundred microliters per nicely of dimethyl sulfoxide (DMSO) was employed for the soluble crystals, along with the absorbance was study using a…
Were morphometrically analyzed by measuring the total emptied location standardized over the total tissue location. Briefly, the outer border in the spinal cord section was identified to delineate the website…
High yielding ultrasound mediated three-component synthesis of substituted propargylamines Sreedhar and co-workers from Indian Institute of Chemical Technology have described a mild one-pot, three-component synthesis of substituted propargylamines by using…
Welwitindolinone A Isonitrile (3) is the first of a family of oxindole natural products isolated from the cyanobacteria Hapalosiphon welwischii and Westiella intricate on the basis of their activity for…
The complex tetracyclic alkaloid (-)-acutumine 3, isolated from the Asian vine Menispermum dauricum, shows selective T-cell toxicity. The two adjacent cyclic all-carbon quaternary centers of 3 offered a particular challenge.…
Rich G. PMID:23381626 Carter of Oregon State University described (J. Am. Chem. Soc. 2008, 130, 9238 DOI: 10.1021/ja803613w) the first enantioselective synthesis of the Lycopodium alkaloid (-)-lyopodine (3). A key…
The tetracyclic alkaloids Nankakurine A and Nankakurine B were isolated from the club moss Lycopodium hamiltonii. A preliminary study of the biological activity of Nankakurine A suggested that it could…
The Zoanthus alkaloids, exemplified by (-)-norzoanthamine (3a) and zoanthamine (3b), show promising activity against osteoporosis. PMID:24189672 Susumu Kobayashi of the Tokyo University of Science assembled (Angew. Chem. Int. Ed. 2009,…
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