PROTECTING GROUPS
317
V.A-7 Evans, D.A. et al., TL, 35, 7171.
Mild Alcohol Methylation Procedures for the Synthesis of
Polyoxygenated Natural Products. Applications to the Synthesis
of Lonomycin A.
V.A-8 Diaz, R.R. et al., JOC, 59,7928; Zhu, J. et al., TL, 35, 4349; Genet,
J.P. et al., TL, 35, 8783.
l:NBS,hv,CCl 4 >
R _ Q H
2: base
? g 9 9 %
V.A-9 Ziegler, T. and Pantkowski, G., LA, 659.
The 2-(Chloroacetoxymethyl)benzoyl (CAMB) Group as a Novel
Protecting Group for Carbohydrates.
V.A-10 Mabic, S. and Lepoittevin, J.P., SL, 851; Jones, G.B. et al., TA, 5,
1199; Brussee, J. et al., JOC, 59,7133; Prakash, C. et al., TL, 35, 7565.
« Λ ο « ,
BF 3 OEt 2 , CH 2 CI 2
R-OSiR'3
2
il
2 _ L ^
R-OH
/
\
MeO—('
y— CHO
OH
> 9 8 %
V.A-11 Xu, Y.C. et al., TL, 35, 6207.
OR'
Mg,MeOH
i
//
\
PNBO
\ = /
*- /
(
HO
R· = Ac, B Z , Pv
6 8 _ 9 9 %
OR'