نتایج جستجو برای: cryptolepine isosteres
تعداد نتایج: 248 فیلتر نتایج به سال:
The phytochemical study of Sida rhombifolia L. (Malvaceae) led to the isolation through chromatographic techniques of eleven secondary metabolites: sitosterol (1a) and stigmasterol (1b), sitosterol-3-O-b-D-glucopyranoside (2a) and stigmasterol-3-O-b-D-glucopyranoside (2b), phaeophytin A (3), 17³-ethoxypheophorbide A (4), 13²-hydroxy phaeophytin B (5), 17³-ethoxypheophorbide B (6), 5,7-dihydroxy...
The first examples of Lewis base adducts the parent boraphosphaketene (H2B-PCO) and their cyclodimers are prepared. One these is shown to undergo mild decarbonylation phosphinidene insertion into a B−C bond borole, forming very rare 1,2-phosphaborinines, B/P isosteres benzene. strong donor properties 1,2-phosphaborinines confirmed by synthesis π complexes with Group 6 metals.
We report the discovery that boron nitride nanotubes (BNNTs), isosteres of CNTs with unique physical properties, are inherently noncytotoxic. Furthermore, we developed a biomemetic coating strategy to interface BNNTs with proteins and cells. Finally, we showed that BNNTs can deliver DNA oligomers to the interior of cells with no apparent toxicity. This work suggests that BNNTs may be superior t...
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