Synthesis of 8-Desmethoxy Psymberin: A Putative Biosynthetic Intermediate Towards the Marine Polyketide Psymberin
作者:Max Bielitza、Jörg Pietruszka
DOI:10.1002/chem.201203149
日期:2013.6.17
tetrahydropyran core was an enantioselective catalytic Mukaiyama aldol reaction using a titanium(IV)–BINOL catalyst system. syn‐Selective reduction followed by ozonolysis led to a rapid assembly of the tetrahydropyran ring. This flexible approach also allows the synthesis of similar fragments of other complex molecules such as bryostatins and pederins. The syn‐selective coupling between the tetrahydropyran
描述了假单胞菌素的假定的生物合成前体的合成,包括天然产物的正式合成。致密地官能化的四氢吡喃核的关键步骤是使用钛(IV)-BINOL催化剂体系进行对映选择性催化Mukaiyama aldol反应。syn-选择性还原,然后进行臭氧分解,导致四氢吡喃环快速组装。这种灵活的方法还可以合成其他复杂分子的类似片段,例如bryostatin和pederins。该SYN四氢吡喃与芳族醛之间的选择性偶联是通过硼介导的羟醛反应实现的,随后进行进一步的转化以完成前体的合成以及天然产物的正式合成。