乙酰丙酮乙酰铂[6]和铂[7]螺旋酮是由2-吡啶基取代的苯并菲配体通过两步环铂反应制得的。已测量了拆分对映异构体的光物理性质(紫外可见吸收和发射行为)和手性(圆二色性和摩尔旋转)。这些金属二十二烯构成了一个易于获得的新的烯类衍生物家族,这些衍生物具有较大且可调节的手性,可在理论上进行合理化,并与母体[6]-和[7]碳硼烷烯进行比较。此外,它们在室温下为红色磷光体,可通过将金属中心氧化为四价铬来调节其较大的手性。。杂合子和纯手性非对映体的双(metallahelicene),其具有一个罕见的Pt小号III 铂III支架桥接由benzoato也已制备的配体。结果表明,杂手性(P,M)-bis (Pt III – [6]螺旋)9 a 1可以异构化为同手性的(P,P)-和(M,M)-bis(Pt III- [6] [helicene)9 a 2。借助依赖于时间的密度泛函理论,对这些系统进行了光谱
Enantiopure metallahelicenes have been prepared by cyclometalation of 2‐pyridyl‐substituted benzophenanthrenes followed by resolution using chiral HPLC. They are red phosphors at room temperature and their chiropticalproperties can be modulated by oxidation of the metal center to the oxidation state IV.
Homochiral and heterochiral cis‐bis‐cycloplatinated‐[6]helicene derivatives 1 b1, 2, as representative examples of platina[6]helicenes that share a common platinum center, have been prepared. A diastereo‐ and enantioselective synthesis, which combines CH activation and dynamic isomerization from heterochiral structure 1 b2 into homochiral structure 1 b1, is also described. Overall, this isomerization
制备了手性和杂手性的顺式-双-环-环化-[6]螺旋衍生物1 b 1,2,它们是具有共同铂中心的铂[6]螺旋烯的代表性实例。甲diastereo-和对映选择性合成,它结合了CH活化和动态异构化从异向结构1b的2成纯手性结构1b中1,也被描述。总的来说,这种异构化过程导致手性信息从一个螺旋烯部分转移到另一个螺旋烯部分。同手性(P)‐和(M)‐ 1 b 1的手性被氧化成相应的(P)-和(M)-二碘-Pt IV配合物后被大大修饰(5)。通过执行理论计算也分析了这些变化。Ç ħ活化有机金属helicenes的合成通过的制备进一步说明顺式-双cycloplatinated- [8]螺烯1c中。
Aminomethylene substituted non-aromatic heterocycles and use as substance P antagonists
申请人:Pfizer Inc.
公开号:US06369074B1
公开(公告)日:2002-04-09
The present invention relates to novel aminomethylene substituted non-aromatic heterocycles and, specifically, to compounds of the formula
wherein W, R1, R2, R3, A, X′, Y′ and Z′ are as defined in the specification, and to intermediates used in the synthesis of such compounds. The novel compounds of formulae Ia and Ib are useful in the treatment of inflammatory and central nervous system disorders, as well as other disorders.