3R-Hydroxymuscarine from L-rhamnose without protection
作者:Simon J. Mantell、Peter S. Ford、David J. Watkin、George W.J. Fleet、David Brown
DOI:10.1016/s0040-4039(00)60121-1
日期:1992.7
The synthesis of the muscarine analogue 3R-3-hydroxymuscarine [(2S,3R,4R,5S)-3,4-dihydroxy-tetrahydro-N,N,N,5-tetramethyl-2-furanmethanimium tosylatel from L-rhamnose does not require the use of any protecting group.
3-Hydroxymuscarines from L-Rhamnose
作者:Simon J. Mantell、Peter S. Ford、David J. Watkin、George W.J. Fleet、David Brown
DOI:10.1016/s0040-4020(01)90162-0
日期:1993.4
No protection is necessary for the synthesis of the muscarine analogue 3R-3-hydroxymuscarine from L-rhamnose; a sole silyl ether protecting group is required for the synthesis of 3S-3-hydroxymuscarine. Efficient construction of the tetrahydrofuran ring can be achieved either by ring contraction of the α-triflate of δ-rhamnonolactone, or by ring opening and closing of the α-triflate of γ-rhamnonolactone