Relationships between the structure of 6-allyl-6,8-diazabicyclo[3.2.2]nonane derivatives and their σ receptor affinity and cytotoxic activity
作者:Ralph Holl、Dirk Schepmann、Renate Grünert、Patrick J. Bednarski、Bernhard Wünsch
DOI:10.1016/j.bmc.2008.11.043
日期:2009.1
lines was investigated. All possible stereoisomers of the 2-hydroxy, 2-methoxy, 2,2-dimethoxy, 2-oxo, and 2-unsubstituted 6,8-diazabicyclo[3.2.2]nonanes were prepared in a chiral pool synthesis starting with (S)- and (R)-glutamate. A Dieckmann analogous cyclization was the key step in the synthesis of the bicyclic framework. The configuration in position 2 was established by a diastereoselective LiBH4
一系列桥接的哌嗪衍生物的制备和朝向σ的亲合性1和σ 2个通过放射性配体结合测定法的手段以及六个人肿瘤细胞系的生长的抑制进行了研究受体。在以(S)开头的手性库合成中,制备了2-羟基,2-甲氧基,2,2-二甲氧基,2-氧代和2-未取代的6,8-二氮杂双环[3.2.2]壬烷的所有可能的立体异构体。-和(R)-谷氨酸。Dieckmann类比环化是双环框架合成的关键步骤。通过非对映选择性LiBH 4建立位置2的构型减少和随后的Mitsunobu反演。结构亲和力的关系表明,在位置2的取代基降低σ 1个,这可能是由于与σ不利的相互作用受体亲和力1受体蛋白。如果没有在位置2高σ的取代基1倍的亲和力得到(23A((+) - (1小号,5小号)-6-烯丙基-8-(4-甲氧基苄基)-6,8-二氮杂双环[3.2.2]壬烷):K i = 11 nM)。用六种人类肿瘤细胞系进行的实验表明,甲基醚ent- 16b(IC