Bicyclic Lactams Derived from Serine or Cysteine and 2-Methylpropanal
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چکیده
منابع مشابه
Enantioselective formal synthesis of uleine alkaloids from phenylglycinol-derived bicyclic lactams.
A two-step route for the enantioselective construction of the tetracyclic ring system of uleine alkaloids, involving the stereoselective conjugate addition of an appropriate indole-containing nucleophile to a chiral bicyclic delta-lactam and the subsequent cyclization on the indole 3-position of the resulting 4,5-disubstituted 2-piperidone, has culminated in the formal total synthesis of severa...
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Terahertz (THz) absorption spectra of the similarly structured amino acids L-serine and L-cysteine in the solid phase at 77 and 298 K are reported and compared to isolated molecule and solid-state infrared vibrational spectral calculations using empirical force field and density functional theory. These comparisons suggest that many higher frequency internal modes can readily be assigned but lo...
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2,4:3,5-di-O-methylene-D-glucitol (Glux-diol) was used for the synthesis of poly(butylene 10 succinate) (PBS) copolyesters by melt polycondensation. Glux-diol possess a rigid bicyclic 11 asymmetric structure made of two fused 1,3-dioxane rings and two hydroxyl functions at the end 12 positions. Copolyesters were prepared over the whole range of compositions with molecular 13 weights varying fro...
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ژورنال
عنوان ژورنال: Synlett
سال: 2020
ISSN: 0936-5214,1437-2096
DOI: 10.1055/s-0039-1691569