已经研究了几种新颖的方法来合成LTD 4 / E 4拮抗剂LY290154。首先通过在关键取代步骤中使用二氢吲哚亲核试剂代替吲哚基阴离子对发现路线进行了重大改进。然后证明了另一种方法,在合成的最新阶段引入了7-氯喹啉部分。有趣的是,后一种方法的关键中间体也是按照Katritzky方法在一锅法中获得的。最后,证明了一种不对称合成方法,该方法相对于McKillop报告的对映选择性路线具有明显优势。
Replacement of Stoichiometric DDQ with a Low Potential <i>o</i>-Quinone Catalyst Enabling Aerobic Dehydrogenation of Tertiary Indolines in Pharmaceutical Intermediates
作者:Bao Li、Alison E. Wendlandt、Shannon S. Stahl
DOI:10.1021/acs.orglett.9b00111
日期:2019.2.15
(phd = 1,10-phenanthroline-5,6-dione), is shown to be effective for aerobic dehydrogenation of 3° indolines to the corresponding indoles. The results show how low potential quinones may be tailored to provide a catalytic alternative to stoichiometric DDQ, due to their ability to mediate efficient substrate dehydrogenation while also being compatible with facile reoxidation by O2. The utility of the
Novel Approaches towards the LTD<sub>4</sub>/E<sub>4</sub> Antagonist, LY290154
作者:Alain Merschaert、Pascal Boquel、Jean-Pierre Van Hoeck、Hugo Gorissen、Alfio Borghese、Benjamin Bonnier、Anne Mockel、Freddy Napora
DOI:10.1021/op060036x
日期:2006.7.1
Several novel approaches have been investigated for the synthesis of the LTD4/E4 antagonist LY290154. Significant improvements to the discovery route were first made by using an indoline nucleophile instead of an indolyl anion in the key substitution step. An alternative approach, introducing the 7-chloroquinoline moiety in the latest stages of the synthesis was then demonstrated. Interestingly, the
已经研究了几种新颖的方法来合成LTD 4 / E 4拮抗剂LY290154。首先通过在关键取代步骤中使用二氢吲哚亲核试剂代替吲哚基阴离子对发现路线进行了重大改进。然后证明了另一种方法,在合成的最新阶段引入了7-氯喹啉部分。有趣的是,后一种方法的关键中间体也是按照Katritzky方法在一锅法中获得的。最后,证明了一种不对称合成方法,该方法相对于McKillop报告的对映选择性路线具有明显优势。
Process for preparing N-benzyl indoles
申请人:The University of East Anglia
公开号:US05807866A1
公开(公告)日:1998-09-15
A process for producing a compound of the formu5la ##STR1## comprising the step of reacting a compound of the formula ##STR2## with a compound of the formula ##STR3## to form a compound of the formula ##STR4## wherein R.sup.2a is selected from the groups recited above for R.sup.2, or R.sup.2a --X-- is a protected hydroxyl group, and Z is a group of formula --Y--R.sub.5 recited above, or a group that can be converted into a group of said formula --Y--R.sup.5. Intermediates of formula IV and composition containing substantially optically pure enantiomers of Formula (I) are included within the scope of the invention.