Phosphoantigens enable the access to a new anti-tumoral and anti-infectious therapeutic pathway, based on innate immunity through the selective activation of T beta 9 delta 2 lymphocytes. The first proof of concept of this new immunotherapy approach was demonstrated with the synthetic phosphoantigen named bromohydrin pyrophosphate (BrHPP, IPH 1101) which was administrated in racemic form to about 200 patients in six clinical trials with good safety and promising early signals of efficacy in type C viral hepatitis and follicular non-Hodgkin's lymphoma. Enantiopure samples of BrHPP in gram scale are required for further studies on structure-bioactivity relationship. Thus we developed two complementary synthetic pathways, the first using transformation of a chiral compound and the second involving asymmetric synthesis starting from a prochiral building-block. The synthesis of a second-generation phosphoantigen, N-HDMAPP, which bears a phosphoramidate moiety, was also investigated. (C) 2012 Elsevier Ltd. All rights reserved.
TENAGLIA, A.;WAEGELL, B., TETRAHEDRON LETT., 29,(1988) N 38, C. 4851-4854
作者:TENAGLIA, A.、WAEGELL, B.
DOI:——
日期:——
Palladium-Catalyzed Reaction of 1,3-diene monoepoxides with sodium azide. 1,4-Azidohydroxylation of conjugated dienes.
作者:A. Tenaglia、B. Waegell
DOI:10.1016/s0040-4039(00)80625-5
日期:1988.1
Palladium-catalyzed regioselective 1,4-addition of sodium azide to vinylepoxides afford 4-azido-2-alkenols in good yields.
钯催化的叠氮化钠与乙烯基环氧化物的区域选择性1,4-加成反应可得到高产率的4-叠氮基-2-烯醇。
The Allylic Azide Rearrangement: Achieving Selectivity
作者:Alina K. Feldman、Benoît Colasson、K. Barry Sharpless、Valery V. Fokin
DOI:10.1021/ja050622q
日期:2005.10.1
Allylic azides undergo a rapid [3.3]-sigmatropicrearrangement which results in dynamic equilibrium of several isomers. Thus, reactions of allylic azides usually result in mixtures of products. However, even small differences in reactivity of the isomeric allylic azides can be amplified to result in a single product in good to excellent yields. For example, the Cu(I)-catalyzed cycloaddition with alkynes