Compounds containing oxazolidinone moiety and uses thereof
申请人:——
公开号:US20040039209A1
公开(公告)日:2004-02-26
A compound and method for producing an enantiomerically enriched epoxide from an olefin using a chiral ketone and an oxidizing agent is disclosed. In particular, the compound is of the formula: I wherein R
1
, R
2
, R
3
and R
4
are those defined herein.
Synthesis of Complex Stereoheptads en Route to Daphnane Diterpene Orthoesters
作者:Long V. Nguyen、Aaron B. Beeler
DOI:10.1021/acs.orglett.8b02124
日期:2018.9.7
Tricyclic cores of the daphnanediterpene orthoesters (DDOs) are synthesized in 10 steps from readily available materials. Key to their assembly is the development of a stereocontrolled p-quinol functionalization sequence which enables rapid access to DDO C-ring stereopolyads from simple precursors. Problems encountered in stereo- and regioselectivity are highlighted and solved by exact changes in
Chiral acetals in organic synthesis: Regioselective synthesis of 2-and 3-hydroxy acetals from 2,3-olefinic acetals. Reinvestigation and further applications
作者:Yashwant D. Vankar、M.Venkatram Reddy、Narayan C. Chaudhuri
DOI:10.1016/s0040-4020(01)85714-8
日期:1994.1
Achiral as well as chiral 2,3-olefinic acetals are converted into 2- and 3- hydroxy acetals via LAH reduction of the corresponding epoxides and via bromohydrins followed by TBTH reductions respectively. Synthesis of 1,3-diones is described. Compounds from chiral systems are further utilized for asymmetric synthesis.
Regioselective reductions of 23-epoxy acetals with lithium aluminum hydride: A reinvestigation.
作者:Helena M.C. Ferraz、Regina M. Sasahara、Pellegrino Losco
DOI:10.1016/s0040-4039(00)74739-3
日期:1992.12
Treatment of 2,3-epoxy acetals with lithiumaluminumhydride gave the corresponding 2-hydroxy acetals, instead of the previously reported 3-hydroxy acetals.