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Mostrando ítems 1-10 de 23
A formal total synthesis of deoxynojirimycin from D-glucitol
(Sociedade Brasileira de Química, 2003)
H-1 and C-13 NMR spectroscopy analysis of acetonides of D-glucitol derivatives
(John Wiley & Sons LtdW SussexInglaterra, 1999)
Cyclization of 1,2:3,4-di-O-isopropylidene-α-D-galacto-1,6-hexodialdo-1,5-pyranose acylhydrazone and semicarbazone
(Arkat USA, 2013-04-13)
Cyclization of 1,2:3,4-di-O-isopropylidene-α-D-galacto-1,6-hexodialdo-1,5-pyranose benzoylhydrazone using acetylating mixtures led us to the corresponding (2R)- and (2S)-5- phenyl-1,3,4-oxadiazoline derivatives. The same ...
First total synthesis of the only known 2-isopropyliden-2: H -benzofuran-3-one isolated from V. luetzelburgii
(Royal Society of Chemistry, 2017-01)
The first total synthesis of 5-(1-hydroxy-1-ethyl)-2-isopropyliden-2H-benzofuran-3-one, is reported in its racemic and in one of its optically active [(S)-(-)] forms. This heterocycle, isolated from Verbesina luetzelburgii, ...
First total synthesis of the only known 2- isopropyliden-2H-benzofuran-3-one isolated from V. luetzelburgii
(Royal Society of Chemistry, 2017)
Enantioselective Addition of Diethylzinc to Benzaldehyde Catalyzed by an Organometallic Ti(IV) Compound and a Xylose Derivative
(SOC BRASILEIRA QUIMICA, 2009)
A derivative of D-xylose, 1,2-O-isopropylidene-alpha-D-xylofuranose (1), with Ti((OPr)-Pr-i)(4) was used as a chiral catalyst in the asymmetric alkylation of benzaldehyde with diethylzinc (Et2Zn) for the high-yield production ...
Obtenção de derivados da 5’-metil-tioadenosina, potenciais agentes antimaláricos
(Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em QuímicaUFJF, 2017)
Studies on the Michael addition of naphthoquinones to sugar nitro olefins: first synthesis of polyhydroxylated hexahydro-11H-benzo[a]carbazole-5,6-diones and hexahydro-11bH-benzo[b]carbazole-6,11-diones
(PERGAMON-ELSEVIER SCIENCE LTD, 2012)
A strategy for the synthesis of the novel (6bR,7R,8S,9S,10S,10aR)-8-(benzyloxy)-7,9,10-trihydroxy-6b,7,8,9,10,10a-hexahydro-11H-benzo[a]carbazole-5,6-dione is reported. The key steps were the Michael addition of ...
Differential effect of heterocyclic D-ribofuranoside derivatives on human prostate cancer cell viability and cell cycle progression
(Elsevier Masson, 2014-08)
New D-ribofuranoside derivatives containing two five membered heterocycles, isoxazole and triazole or two triazole rings, were synthesized. The final products as well as the synthetic precursors were physically and ...