四氢氧杂蒽酮类天然产物的霉菌毒素具有许多有趣的生物学特性。在这篇完整的论文中,我们向此类化合物的一些成员介绍了我们的合成策略,即 blennolides A 和 C。我们公开了衍生自多米诺氧杂-迈克尔-羟醛缩合的各种氧杂蒽酮官能化的范围和局限性,并追求这些氧杂蒽酮的二聚化。此外,还获得了 blennolide C 的第一个晶体结构。
Diastereoselective Synthesis of Highly Functionalized Tetrahydroxanthenols—Unprecedented Access to Privileged Structural Motifs
作者:Carl F. Nising、Ulrike K. Ohnemüller、Anne Friedrich、Bernhard Lesch、Jochen Steiner、Hansgeorg Schnöckel、Martin Nieger、Stefan Bräse
DOI:10.1002/chem.200501485
日期:2006.4.24
Tetrahydroxanthenones, which can be easily prepared by a dominooxa-Michael aldol condensation, offer various possibilities for diastereoselective functionalization, giving access to the stereocontrolled synthesis of stereochemical triades or tetrades, which represent privileged structural motifs. In most cases, the relative stereochemistry was unequivocally established by crystal structure analysis