Abstract:
Alkenyl cephalosporin derivs. of formula (I) and their pharmaceutical salts are new. 3-cephem compds. were obtained by witting reaction from a phosphonium cpd. of formula (II) with an aldehyde cpd. of formula (III) and then were deacylated to produce 7- amino-3-cephem derivs. The formula (I) derivs. are prepd. by acylation of 7-amino-3-cephem derivs with 2- aminothiazolyl-2-hydroxyimino- acetic acid compds. In (I), R1=H or a protecting gp. as in cephalosporin and penicillin cpds.; R2=H, C1-4 alkyl or substd. alkyl; R3=H or a deriv. of a carboxy gp., an atom for prepn. of a salt or carboxy protecting gp.
Abstract:
본 발명은 다음 일반식(Ⅰ)로 표시되는 신규한알 케닐세팔로스포린 및 그 제조방법에 관한 것이다.
식 중 R 1 은 수소, 트리틸, 3급 부톡시카르보닐, 포르밀이고, R 2 는 수소, 탄소수 1~4의 알킬, 알콕시카보닐메틸, 카르복시메틸, 1-카르복시에틸, 1-카르복시-1-메틸에틸, 탄소수 3~9의 시클로알킬기이고, R 3 는 수소, 알킬기, Na, K이고, R 4 및 R 5 는 수소 또는 대페닐메틸, 파라메톡시벤질임. 본 발명의 일반식(Ⅰ)로 표시되는 알케닐세팔로 스포린은 다음과 같은 반응공정에 따라 제조한다.
Abstract:
PURPOSE: A triazole derivative is provided to be used as a restorative of mitochondrial dysfunction with effects of treating Alzheimer's diseases, Parkinson's disease, Huntington's disease, ischemic diseases, diabetes, and schizophrenia. CONSTITUTION: A compound is selected among a triazole derivative of chemical formula 1and a pharmaceutically acceptable salt thereof. A pharmaceutical composition for treating Alzheimer's disease, Parkinson's disease, Huntington's disease, ischemic disease, diabetes, and schizophrenia contains the compound as an active ingredient. A method for preparing the triazole compound comprises the step of reacting an azide compound of chemical formula 2 and an ethynyl benzene compound of chemical formula 3 by dipolar cycloaddition.
Abstract:
PURPOSE: Aryloxime derivatives are provided to show excellent activity as a neuroprotective agent acting on mitochondria, therefore, to be useful as a treatment and prevention agent of diseases such as Alzheimer disease, Parkinson's disease, Huntington disease, ischemic disease, diabetes, and schizophrenia. CONSTITUTION: A chemical is selected from aryloxime derivatives represented by Chemical formula 1, and pharmaceutically acceptable salt thereof. In the chemical formula 1; R^1 represents a 4-8 membered azacyclic group or a 7-9 membered azabicylic group, and the azacyclic or azabicyclic group is able to be substituted with 1-3 substituents selected from C1-6 alkyl and benzyl, or be non-substituted; R^2 and R^3 respectively represent a hydrogen group, a halogen group, a C1-C6 alkyl group, a C1-C6 haloalkyl group, or a C1-C6 alkoxy group; and n is an integer of 0, 1, 2 or 3.