First stereoselective total synthesis of triumfettamide
摘要:
The first total synthesis of triumfettamide (1) is described. The asymmetric syntheses of two highly functionalized units-alpha-hydroxylated C17 monounsaturated fatty acid unit (2) and C26 phytosphingosine (3) have been accomplished involving Sharpless asymmetric dihydroxylation, Sharpless kinetic resolution, regioselective epoxide opening, regioselective DIBAL-H reduction of acetal, Wittig olefination as the key steps. Finally N-acylation of phytosphingosine 3 with (2R,6Z)-2-hydroxy-6-heptadecenoic acid 2 followed by DDQ deprotection of PMB, provided target compound 1. (C) 2013 Elsevier Ltd. All rights reserved.
First stereoselective total synthesis of triumfettamide
摘要:
The first total synthesis of triumfettamide (1) is described. The asymmetric syntheses of two highly functionalized units-alpha-hydroxylated C17 monounsaturated fatty acid unit (2) and C26 phytosphingosine (3) have been accomplished involving Sharpless asymmetric dihydroxylation, Sharpless kinetic resolution, regioselective epoxide opening, regioselective DIBAL-H reduction of acetal, Wittig olefination as the key steps. Finally N-acylation of phytosphingosine 3 with (2R,6Z)-2-hydroxy-6-heptadecenoic acid 2 followed by DDQ deprotection of PMB, provided target compound 1. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of some trideoxy- d -hexoses and derivatives thereof from d -glucono-1,5-lactone
作者:Henk Regeling、Gordon J. F. Chittenden
DOI:10.1016/0008-6215(92)84152-i
日期:1992.9
methyl 2,3,4-trideoxy-α- d - and -β- d -glycero-hexopyranoside (10 and 11) methyl α- d - and β- d -amicetopyranoside (24 and 25), (2S)-1,2-hexanediol (36), (2S)-1,2,6-hexanetriol (37), and somederivativesthereof from d -glucono-1,5-lactone are described.
Dispiroketals in synthesis (part 9): Resolution of 1,2-diols using a C2-symmetric diphenyltetrahydrobipyran.
作者:Paul J. Edwards、David A. Entwistle、Steven V. Ley、Dafydd R. Owen、Emily J. Perry
DOI:10.1016/0957-4166(94)80016-2
日期:1994.4
A series of 1,2-diols were resolved by the enantioselective formation of the thermodynamically most stable dispiroketal using (2R,2'R) and (2S,2'S) 2,2'-diphenyl-3,3',4,4'-tetrahydro-6,6'- 2 and 3. Deprotection was achieved using a metal ammonia reduction to liberate the resolved diols.
On the stereochemistry of palmerolide A
作者:Matthew D. Lebar、Bill J. Baker
DOI:10.1016/j.tetlet.2007.09.053
日期:2007.11
Degradative studies of the anticancer macrolide palmerolide A have resulted in re-assignment of the C-7,C-10, and C-11 stereocenters. (c) 2007 Elsevier Ltd. All rights reserved.
A General, Practical, and Versatile Strategy for Accessing ω-Functional 1,2-Diols of High Enantiomeric Excess
作者:Thomas R. Hoye、Michael J. Mayer、Tricia J. Vos、Zhixiong Ye