Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Pierre Calinaud"'
Publikováno v:
European Journal of Organic Chemistry. 2006:3421-3433
The highly diastereoselective synthesis of five trifluoro-substituted analogues of mono-, di-, and trisubstituted piperidine alkaloids was accomplished in two to four steps from 2-trifluoromethyl keto-protected 4-piperidones, prepared by an intramole
Publikováno v:
Synthesis. 1995:561-565
Publikováno v:
Carbohydrate Research. 267:227-237
The reaction of ketene acetals with d -glucose, d -mannose, and their methyl glycosides is described as a new route to unusual cyclic orthoesters (at non anomeric positions). The reaction proceeds by preferential attack of the reagent on the primary
Publikováno v:
Carbohydrate Research. 264:33-44
d -Ribono-1,4-lactone, after acetalation, tritylation, and reduction, leads to a cyclization compound which gave with tosyl chloride 1,4-anhydro-2,3- O -isopropylidene-5- O -trityl- d -ribitol. The latter was transformed (acid hydrolysis, periodate o
Publikováno v:
ChemInform. 26
d -Ribono-1,4-lactone, after acetalation, tritylation, and reduction, leads to a cyclization compound which gave with tosyl chloride 1,4-anhydro-2,3- O -isopropylidene-5- O -trityl- d -ribitol. The latter was transformed (acid hydrolysis, periodate o
Publikováno v:
ChemInform. 26
Publikováno v:
ChemInform. 31
An enantioselective preparation of both enantiomers of alkaloid 241D 1 and its C-4 epimer is reported. This simple and concise synthesis, seven steps from pent-3-en-2-one, involves a highly diastereoselective Mannich-type cyclisation as the key step.
Publikováno v:
ChemInform. 34
Synthesis of 4-substituted indolizidin-9-one amino acid by cyclization of pipecolic acid derivatives has been described.
Publikováno v:
ChemInform. 21
Publikováno v:
European Journal of Organic Chemistry; Aug2006, Vol. 2006 Issue 15, p3421-3433, 13p