Aminoglycoside Antibiotics – Fortamine Aglyca Total Synthesis, Optical Resolution, Chemical Modifications
作者:Jürgen Schubert、Reinhard Schwesinger、Lothar Knothe、Horst Prinzbach
DOI:10.1002/jlac.198619861201
日期:1986.12.12
adducts (30, 32) are quantitatively separated by crystallization/chromatogrphy. Following hydrogenation, natural and nonnatural cis-1,4-inosadiamines are obtained optically pure [e.g. fortamine (−)-1, ent-fortamine (+)-1, 3-O-demethylfortamine (−)-38, ent-3-O-demethylfortamine (+)-38]. This approach, which was optimized by numerous model reactions, allows wide chemical modifications and leads among others
从二氢-表肌醇10(最终可从苯获得)开始,开发了对映体纯的(+)/(-)-脱-O-甲基fortamines(衍生物)的方便的全合成方法。关键步骤是区域特异性的环氧开口,其在分子内在双环氧双(尿烷)11中发生,并在分子间被环氧乙烷rac - 13中的(+)-1-苯基乙胺发生。通过结晶/色谱法定量分离非对映体加合物(30、32)。氢化后,获得光学纯的天然和非天然顺式-1,4-异氨基二胺[例如,Fortamine(-)- 1,ENT -fortamine(+) - 1,3- Ö -demethylfortamine( - ) - 38,耳鼻喉科-3- Ô -demethylfortamine(+) - 38 ]。该方法通过多种模型反应进行了优化,可进行广泛的化学修饰,并导致3- O-去甲基fortamine和ent- fortamine衍生物,其中仅被糖基化的(6)4-OH基团未受保护。