132424-10-3Relevant articles and documents
Synthesis of Medium-Ring-Sized Benzolactams by Using Strong Electrophiles and Quantitative Evaluation of Ring-Size Dependency of the Cyclization Reaction Rate
Kurouchi, Hiroaki,Ohwada, Tomohiko
, p. 876 - 901 (2019/12/30)
Benzolactams with medium-sized rings were synthesized via the electrophilic aromatic substitution reaction of carbamoyl cations (R1R2N+═C═O) in good to high yields without dilution. These reactions were utilized to quantitatively examine the extent of retardation of medium-sized ring formation, compared to five- or six-membered ring formation. The order of reaction rates of formation of cyclic benzolactams is six- > five- > seven- > eight- > nine-membered ring at 25 °C. The present reaction provides a route to eight- A nd nine-membered benzolactams.
11BETA-HALOGEN-7ALPHA-SUBSTITUTED ESTRATRIENES, METOD FOR PRODUCING PHARMACEUTICAL PREPARATIONS CONTAINING SAID 11BETA-HALOGEN-7ALPHA- SUBSTITUTED ESTRATRIENES AND USE OF THE SAME FOR PRODUCING MEDICAMENTS
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, (2008/06/13)
This invention describes the new 11β-halogen-7α-substituted estratrienes of general formula I in which R11 is a fluorine or chlorine atom, and the other substituents have the meanings that are explained in more detail in the description. The compounds have antiestrogenic properties or tissue-selective estrogenic properties and are suitable for the production of pharmaceutical agents.