Total synthesis of (±)-β-chamigrene and (±)-laurencenone C via Ireland ester Claisen rearrangement and an intramolecular type II carbonyl ene reaction sequence
作者:A. Srikrishna、R. Ramesh Babu
DOI:10.1016/j.tet.2008.08.095
日期:2008.11
A combination of Ireland ester Claisen rearrangement and intramolecular type II carbonyl enereactions were exploited for the total synthesis of chamigrenes containing a quaternary carbon atom next to the spirocentre in spiro[5.5]undecane.
Protection of the Carbonyl Group as 1,2,4-Trioxane and Its Regeneration under Basic Conditions<sup>1</sup>
作者:Chandan Singh、Heetika Malik
DOI:10.1021/ol052378d
日期:2005.12.1
An experimental protocol demonstrating the protection of the carbonylgroup as 1,2,4-trioxane, the stability of the protecting group under a variety of reaction conditions, and the regeneration of the carbonylgroup with Triton B in THF at room temperature is presented. The method provides a useful alternative for the protection of carbonyl compounds having acid-sensitive moieties.
Total syntheses of (±)-α-acorenol, β-acorenol, α-epi-acorenol and β-epi-acorenol via an Ireland ester Claisen rearrangement and RCM reaction sequence
作者:A. Srikrishna、R. Ramesh Babu
DOI:10.1016/j.tetlet.2007.07.163
日期:2007.9
syntheses of (±)-α- and β-acorenols and (±)-α- and β-epi-acorenols, spiro[4.5]decanesesquiterpenes, isolated from the western Australian sandalwood oil, have been accomplished employing a combination of Ireland ester Claisen rearrangement and RCM reactions for an efficient construction of the spiro[4.5]decane present in acoranes.
Conformational-Analysis-Guided Discovery of 2,3-Disubstituted Pyridine IDO1 Inhibitors
作者:Emily C. Cherney、Liping Zhang、Weiwei Guo、Audris Huang、David Williams、Steven Seitz、Weifang Shan、Xiao Zhu、Johnni Gullo-Brown、Derrick Maley、Tai-an Lin、John T. Hunt、Christine Huang、Zheng Yang、Celia J. D’Arienzo、Lorell N. Discenza、Asoka Ranasinghe、Mary F. Grubb、Sarah C. Traeger、Xin Li、Kathy A. Johnston、Lisa Kopcho、Mark Fereshteh、Kimberly A. Foster、Kevin Stefanski、Diane Delpy、Gopal Dhar、Aravind Anandam、Sandeep Mahankali、Shweta Padmanabhan、Prabhakar Rajanna、Venkata Murali、T. Thanga Mariappan、Shabeerali Pattasseri、Roshan Y. Nimje、Zhenqiu Hong、James Kempson、Richard Rampulla、Arvind Mathur、Anuradha Gupta、Robert Borzilleri、Gregory Vite、Aaron Balog
DOI:10.1021/acsmedchemlett.1c00236
日期:2021.7.8
with an alternative aromatic system led to the discovery of 2,3-disubstituted pyridines as suitable replacements. Further optimization, which included lowering ClogP in combination with strategic fluorine incorporation, led to the discovery of compound 29, a potent, selective IDO1 inhibitor with robust pharmacodynamic activity in a mouse xenograft model.