84189-13-9Relevant articles and documents
Practical asymmetric approach to medium-sized carbocycles based on the combination of two Ru-catalyzed transformations and a lewis acid-induced cyclization
López, Fernando,Castedo, Luis,Mascare?as, José L.
, p. 287 - 290 (2007/10/03)
(Chemical Equation Presented) Ruthenium-catalyzed coupling of allyl ethyl ether to optically active 1-trimethylsilyl-1-alkyn-3-ols, followed by in situ ketalization and Lewis-acid-induced cyclization, affords enantiomerically pure 1,5-oxygen-bridged eight
INTRAMOLECULAR DIELS-ALDER CYCLOADDITIONS OF VINYLKETENIMINES. A CONVERGENT ROUTE TO CARBAZOLES AND PYRIDOCARBAZOLE ALKALOIDS
Differding, Edmond,Ghosez, Leon
, p. 1647 - 1650 (2007/10/02)
The intramolecular Diels-Alder cycloaddition of acetylenic vinylketenimines is the key step of a highly convergent synthesis of carbazoles.A facile synthesis of N-methyl-tetrahydroellipticine has been completed in five isolated steps from N-methyl piperidone.
LONG-ACTING CONTRACEPTIVE AGENTS: LEVONORGESTREL ESTERS OF UNSATURATED ACIDS
Wan, A. S. C.,Ngiam, T. L.,Leung, S. L.,Go, M. L.,Francisco, C. G.,et al.
, p. 339 - 348 (2007/10/02)
Esters of levonorgestrel (13β-ethyl-17α-ethynyl-17β-hydroxygon-4-en-3-one) with a variety of unsaturated carboxylic acids have been synthesized for evaluation as potential long-acting, injectable contraceptive agents.