Abstract

Bridged bicyclic morpholines are important building blocks in medicinal chemistry research. The bicyclic morpholine 3-oxa-6-azabicylo[3.1.1]heptane (3a) is of particular interest as a morpholine isostere because it is achiral and shows similar lipophilicity to that of morpholine, based on the cLogP of a derived analogue. The first synthesis of morpholine 3a (tosylate salt) is described; the seven-step sequence begins with inexpensive starting materials and uses straightforward chemistry.

Bridged bicyclic morpholines are important building blocks in medicinal chemistry research. The bicyclic morpholine 3-oxa-6-azabicylo[3.1.1]heptane (3a) is of particular interest as a morpholine isostere because it is achiral and shows similar lipophilicity to that of morpholine, based on the cLogP of a derived analogue. The first synthesis of morpholine 3a (tosylate salt) is described; the seven-step sequence begins with inexpensive starting materials and uses straightforward chemistry.

中文翻译：

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实用合成3-氧杂-6-氮杂双环[3.1.1]庚烷的羟甲苯磺酸盐；一种基于吗啉的新型构建基块

摘要

桥接的双环吗啉是药物化学研究的重要组成部分。双环吗啉3-氧杂-6-氮杂双环[3.1.1]庚烷（3a）作为吗啉等排物特别受关注，因为它是非手性的，并且基于衍生类似物的cLogP显示出与吗啉类似的亲脂性。描述了吗啉3a（甲苯磺酸盐）的第一个合成；这七个步骤的顺序从廉价的原材料开始，并使用简单的化学方法。

桥接的双环吗啉是药物化学研究的重要组成部分。双环吗啉3-氧杂-6-氮杂双环[3.1.1]庚烷（3a）作为吗啉等排物特别受关注，因为它是非手性的，并且基于衍生类似物的cLogP显示出与吗啉类似的亲脂性。描述了吗啉3a（甲苯磺酸盐）的第一个合成；这七个步骤的顺序从廉价的原材料开始，并使用简单的化学方法。