382
ORGANIC SYNTHESIS—1995
VI.B-8 Davies, S.G. et al., T, 50, 3975, TA, 5, 203, and JCS(Pl), 2373 and
2385; Semenov, V.P., JOU, 30, 62 and 216.
Me
Me
,Bn
1
y^
-Bn
T
l:ph
N
A ^
FIT
o
OH
86%,92%d.e.
VI.B-9 Gani, D. et al., CC, 1601; Yamamoto, Y. et al., JOC, 59,4068;
Davies, S.G. et al., TA, 5, 35; Ahn, K.H. and Lee, S.J., TL, 35, 1875..
H
C0 2 H
+2
.
R ' î N
C0 2 H
\ /
R 2 NH, Mg+
2
, K* >
K >\
g j
/
\
3-methyl aspartase
H'"y
\
H0 2 C
R
F
H0 2 C
H
0-50 %
VI.B-10 Lobo, A.M. et al., TL, 35, 2747.
rV
MsCl, »Pr 2 NEt, 0 ° d
OH
Me
JL^OMs
Uk'
H
i
87 % Me