Improved conditions for the preparation of 17 are reported together with the synthesis of an advanced intermediate 38en route to keramaphidin B, a plausible biogenetic precursor to the manzamines.
                                    据报道,制备17的条件得到改善,同时还合成了高级中间体38,该中间体在去往keramaphidin B的途中,后者是一种
甘露糖胺的可能的
生物遗传前体。