clodextrin (3), which had two isomers. One (3A) has the two p-(allyloxy)phenyl arms directed away from the cyclodextrin cavity, and the other (3B) has one of the p-(allyloxy)phenyl groups through the cavity to form a self-inclusion complex. When either 3A or 3B was treated with methyl iodide and sodium hydride, the resulting permethylated 6(A),6(B)-bis-O-[p-(allyloxy)phenyl]heptakis(2,3-di-O-methyl)-6(C)
研究了6(A),6(B)-双-O- [对-(烯丙氧基)苯基]-取代的β-
环糊精的合成,结构和光谱性质。通过用2,4-二
甲氧基苯-1,5处理七(2,3-二-O-甲基)-β-
环糊精(1)进行6(A),6(B)-羟基的选择性活化-二
磺酰氯得到6(A),6(B)-双
磺酸酯2,产率仅为3%。该物质在
DMF中用对-(烯丙氧基)
苯甲酸钠处理以形成6(A),6(B)-双-O- [对-(烯丙氧基)苯基]庚基(2,3-二-O-甲基) )-β-
环糊精(3),具有两个异构体。一个(3A)的两个对-(烯丙氧基)苯基臂背离
环糊精腔,另一个(3B)具有一个通过该腔的对-(烯丙氧基)苯基基团,形成自包合物。当3A或3B用甲基
碘和氢化
钠处理时,生成的全甲基化6(A),6(B)-双-O- [对-(烯丙氧基)苯基]庚基(2,3-二-O-甲基)-6(C),6(D),6( E),6(F),6(G)-戊-O-甲基-β-
环糊精(4)由