This invention relates to a method for the production of a sphingoid base according to formula
1
comprising the steps of
(1) dissolving a starting compound according to formula III or a salt thereof in a substantially inert solvent,
2
(2) protecting the NH
2
group with a NH
2
protecting group,
(3) activating the C-4 HR
3
group for an elimination reaction with the C-5 HR
4
group,
(4) causing an elimination reaction to take place to form a double bond between the C-4 and C-5 carbon atom, and
(5) removing the NH
2
protecting group.
A simple and low cost synthesis of d-erythro-sphingosine and d-erythro-azidosphingosine from d-ribo-phytosphingosine: glycosphingolipid precursors
作者:Richard J.B.H.N. van den Berg、Cornelis G.N. Korevaar、Gijsbert A. van der Marel、Herman S. Overkleeft、Jacques H. van Boom
DOI:10.1016/s0040-4039(02)01807-5
日期:2002.11
yield of 58% and 70%, respectively. A key transformation in the synthesis of d-erythro-sphingosine (1) is the palladium catalyzed regiospecificreduction of the Z-enol triflate 9. A crucial step in the synthesis of azidosphingosine 2 comprises a regio- and stereoselective in situ trans-elimination of the 4-O-triflate of azidophytosphingosine 13.