211504-69-7Relevant academic research and scientific papers
Synthetic studies on lytophilippine A: Synthesis of the proposed structure
Jang, Ki Po,Choi, Soo Young,Chung, Young Keun,Lee, Eun
supporting information; experimental part, p. 2476 - 2479 (2011/07/09)
Chemical equations presented. Synthesis of the proposed structure of lytophilippine A was accomplished employing SmI2-mediated 5-exo cyclization of an aldehydo β-alkoxyvinyl sulfoxide and ring-closing metathesis reaction.
Aldol reactions between L-erythrulose derivatives and chiral α-amino and α-fluoro aldehydes: Competition between felkin-anh and cornforth transition states
Diaz-Oltra, Santiago,Carda, Miguel,Murga, Juan,Falomir, Eva,Marco, J. Alberto
experimental part, p. 9240 - 9254 (2009/09/30)
Both matched and mismatched diastereoselection have been observed in aldol reactions of a boron enolate of a protected L-erythrulose derivative with several chiral α-fluoro and α-amino aldehydes. Strict adherence to the Felkin-Anh model for the respective transition structures does not account satisfactorily for all the observed results, as previously observed in the case of α-oxygenated aldehydes. In some cases, only the Cornforth model provides a good explanation. The factors that influence this dichotomy are discussed and a general mechanistic model is proposed for aldol reactions with α-heteroatom-substituted aldehydes. Additional support for the model was obtained from density functional calculations.
Stereochemically controlled synthesis of 1,8-dioxaspiro[4.5]decanes and 1-oxa-8-thiaspiro[4.5]decanes by phenylsulfanyl migration
Earnes, Jason,Fox, David J.,De Las Heras, Maria A.,Warren, Stuart
, p. 1903 - 1914 (2007/10/03)
Single enantiomers and diastereoisomers of 2- and 3-alkyl-3-phenylsulfanyl-1,8-dioxa- and 1-oxa-8-thiaspiro-[4.5]decanes can be prepared in good yield by acid-catalysed phenylsulfanyl (PhS-) migration. Either the syn-or anti-stereochemistry can be controlled by aldol reactions or by reduction of hydroxy-ketones. The Royal Society of Chemistry 2000.
Towards polyketide libraries - II: Synthesis of chiral aracemic DI- and triketides on a solid support
Reggelin, Michael,Brenig, Volker,Welcker, Reinhard
, p. 4801 - 4804 (2007/10/03)
A new fluoride ion cleavable linker serves as starter unit for iterative asymmetric aldol reactions on a solid support. The synthetic protocol relies on the boron enolate chemistry of D. A. Evans and a cyclic reestablishment of key functionalities. It entails the opportunity for the generation of di- and triketide libraries.
