Patent classifications
C07D209/58
Heterocyclic bridged biphenyls
The present invention relates electroluminescent devices, comprising a compound of the formula ##STR00001##
especially as host for phosphorescent compounds. The hosts may function with phosphorescent materials to provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.
Heterocyclic bridged biphenyls
The present invention relates electroluminescent devices, comprising a compound of the formula ##STR00001##
especially as host for phosphorescent compounds. The hosts may function with phosphorescent materials to provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.
Redox mediators for metal-sulfur batteries
Metal-sulfur energy storage devices also comprising new redox mediator compounds are described.
Redox mediators for metal-sulfur batteries
Metal-sulfur energy storage devices also comprising new redox mediator compounds are described.
Synthesis of tetracyclines and analogues thereof
The tetracycline class of antibiotics has played a major role in the treatment of infectious diseases for the past 50 years. However, the increased use of the tetracyclines in human and veterinary medicine has led to resistance among many organisms previously susceptible to tetracycline antibiotics. The modular synthesis of tetracyclines and tetracycline analogs described provides an efficient and enantioselective route to a variety of tetracycline analogs and polycyclines previously inaccessible via earlier tetracycline syntheses and semi-synthetic methods. These analogs may be used as anti-microbial agents or anti-proliferative agents in the treatment of diseases of humans or other animals.
Synthesis of tetracyclines and analogues thereof
The tetracycline class of antibiotics has played a major role in the treatment of infectious diseases for the past 50 years. However, the increased use of the tetracyclines in human and veterinary medicine has led to resistance among many organisms previously susceptible to tetracycline antibiotics. The modular synthesis of tetracyclines and tetracycline analogs described provides an efficient and enantioselective route to a variety of tetracycline analogs and polycyclines previously inaccessible via earlier tetracycline syntheses and semi-synthetic methods. These analogs may be used as anti-microbial agents or anti-proliferative agents in the treatment of diseases of humans or other animals.
Methods of preparing tecovirimat
Disclosed are methods for the preparation of Tecovirimat for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by the orthopoxvirus.
Methods of preparing tecovirimat
Disclosed are methods for the preparation of Tecovirimat for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by the orthopoxvirus.
Manganese (III) catalyzed C—H aminations
Reactions that directly install nitrogen into CH bonds of complex molecules are significant because of their potential to change the chemical and biological properties of a given compound. Selective intramolecular CH amination reactions that achieve high levels of reactivity, while maintaining excellent site-selectivity and functional-group tolerance is a challenging problem. Herein is reported a manganese perchlorophthalocyanine catalyst [Mn.sup.III(ClPc)] for intermolecular benzylic CH amination of bioactive molecules and natural products that proceeds with unprecedented levels of reactivity and site-selectivity. In the presence of Brnsted or Lewis acid, the [Mn.sup.III(ClPc)]-catalyzed CH amination demonstrates unique tolerance for tertiary amine, pyridine and benzimidazole functionalities. Mechanistic studies indicate that CH amination proceeds through an electrophilic metallonitrene intermediate via a stepwise pathway where CH cleavage is the rate-determining step of the reaction. Collectively these mechanistic features contrast previous base-metal catalyzed CH aminations. The catalyst can be a compound of Formula I: ##STR00001##
Manganese (III) catalyzed C—H aminations
Reactions that directly install nitrogen into CH bonds of complex molecules are significant because of their potential to change the chemical and biological properties of a given compound. Selective intramolecular CH amination reactions that achieve high levels of reactivity, while maintaining excellent site-selectivity and functional-group tolerance is a challenging problem. Herein is reported a manganese perchlorophthalocyanine catalyst [Mn.sup.III(ClPc)] for intermolecular benzylic CH amination of bioactive molecules and natural products that proceeds with unprecedented levels of reactivity and site-selectivity. In the presence of Brnsted or Lewis acid, the [Mn.sup.III(ClPc)]-catalyzed CH amination demonstrates unique tolerance for tertiary amine, pyridine and benzimidazole functionalities. Mechanistic studies indicate that CH amination proceeds through an electrophilic metallonitrene intermediate via a stepwise pathway where CH cleavage is the rate-determining step of the reaction. Collectively these mechanistic features contrast previous base-metal catalyzed CH aminations. The catalyst can be a compound of Formula I: ##STR00001##