Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Vanda Cerè"'
Publikováno v:
The Journal of Organic Chemistry. 68:3311-3314
The enantioselective synthesis of bicyclic sulfonium salts 8 or 9, thioanalogues of swainsonine derivatives, is described. The synthetic strategy is based on a stereo- and regiospecific transannular cyclization reaction of nine-membered cyclic sulfid
Publikováno v:
Tetrahedron: Asymmetry. 13:191-196
Starting from inexpensive alcohol sugars we have synthesised a series of oxygen- and nitrogen-containing enantiopure thiepanes to investigate the structural and stereochemical requirements for inhibitory activity against a variety of glycosidases. An
Autor:
Alessandro Degl'Innocenti, Salvatore Pollicino, Antonella Capperucci, Vanda Cerè, Tiziano Nocentini
Publikováno v:
Synlett. 2002:1447-1450
2-Silyl-1,3-dithiolanes and dithianes can be easily functionalized under fluoride ion conditions. The functionalization occurs stereoselectively, the products bearing the incoming groups in the position formerly occupied by the silyl moiety. These re
Publikováno v:
Tetrahedron. 57:3439-3444
A new 2,3-diamino conduritol, isoster of conduritol F, was obtained starting from d -sorbitol. In the synthetic sequence an unprecedented transannular cyclization led, as a side product, to a bicyclic compound bearing a cyclopropyl ring. The synthesi
Autor:
Silvia Carini, Gérard Cahiez, Alfredo Ricci, Salvatore Pollicino, Mauro Comes-Franchini, Vanda Cerè, Paul Knochel, Celine Boucley
Publikováno v:
Journal of Organometallic Chemistry. 624:223-228
Organomanganese halides and organomanganates prepared by transmetalation of organolithium and Grignard reagents add smoothly to the carbonyl moiety of acylsilanes and of substituted aldehydes bearing a chiral center at the a-position affording the de
Publikováno v:
Tetrahedron: Asymmetry. 11:1389-1395
A stereospecific ring contraction reaction, promoted by NaN3, was detected starting from a thiepane derivative obtained from d -sorbitol, an inexpensive alcohol sugar. The major polyfunctionalized thiolane derivative obtained was investigated as a po
Publikováno v:
Tetrahedron. 56:1225-1231
We have demonstrated the generality of a simple procedure, synthesizing enantiomerically pure (+)-conduritol B and (−)-conduritol F derivatives, starting from d -mannitol and d -sorbitol, respectively. This method, slightly modified, can also be ap
Publikováno v:
Synthesis. 2000:1756-1760
Publikováno v:
Tetrahedron. 55:1087-1098
Nucleophilic addition of organometallics to N,N-dimethyl-glyoxal-monohydrazone occurs smoothly to give the corresponding α-hydroxy hydrazones in high yields. From these compounds, polyfunctional derivatives such as protected α-hydroxy aldehydes and
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :977-980
The acid-catalyzed transannular cyclization of 8–10-membered γ,δ-unsaturated cyclic sulfides yields cis fused bicyclic sulfonium salts independently of the geometry of the double bond. The rate varies linearly with the acidity function –(H0)I w