Stereocontrolled syntheses for the six diastereomeric 1,2-dihydroxy-4,5-diaminocyclohexanes: PtII complexes and P-388 antitumor properties
作者:Donald T. Witiak、David P. Rotella、Joyce A. Filippi、Judith Gallucci
DOI:10.1021/jm00391a011
日期:1987.8
were liberated upon catalytic (H2, Pd/C) hydrogenation. Catalytic osmylation of 9 afforded a mixture of diastereomeric diols 13 and 14, which served as precursors to cis-anti-cis CDD 3b and cis-syn-cis CDD 3a, respectively, whereas osmylation of 11 yielded the expected single product 12, the precursor to cis-anti-trans CDD 3d. Epoxidation of olefins 9 and 11 afforded oxiranes 15 and 17, respectively,
描述了由环己烯二胺cis-4和trans-5的六个非对映异构体1,2-二羟基-4,5-二氨基环己烷3a-f的立体控制的合成。Cbz保护的物种cis-9和trans-11分别作为这些环己二醇二胺(CDD)稳定的Cbz保护的前体的来源,这些环氧化物在催化(H2,Pd / C)氢化后释放。9的催化渗透作用提供了非对映二醇13和14的混合物,它们分别用作顺式-抗-顺式CDD 3b和顺式-顺式-顺式CDD 3a的前体,而11的渗透作用产生了预期的单一产物12顺-反-反CDD 3d。烯烃9和11的环氧化分别提供了环氧乙烷15和17,它们在酸催化水解后产生了相应的Cbz保护的二醇16和18,它是CDD反-反-顺3c和反-反-反3e的前体。由环氧乙烷17形成二醇18的同时伴随有2-oxa-4-氮杂双环[3.3.1]壬基3-one 19的形成。CDD反式-反式-反式3f是由二醇12通过区域选择性单乙酰化制备