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OH
Co(modp)
2
OH
O
TBHP, O
2
65
MOMO
66
OMOM
O
OH
C
14
H
25
OBn
EtO
2
C
CHO
O
O
O
MOMO
68
OH
MOMO
67
MOMO
OTHP
MOM
O
OMOM
BrPh
3
P
THPO
CHO
O
CO
2
Me
O
69
70
OH
OH
O
C
10
H
21
10
4
O
O
OH
HO
gegantetrocin A
Scheme 10-14. Total synthesis of gegantetrocin A by Wang et al.
BnO
C
12
H
25
I(coll)
2
ClO
4
O
OHC
O
OH
OH
HO
OBn
O
73
71
72
C
12
H
25
CHO
C
12
H
25
( )
4
O
O
O
OTBS
OTBS
OH
75
74
O
OTBS
PhS
O
O
O
I
O
I
O
76
77
OH
O
20
C
12
H
25
15
9
O
4
HO
O
O
HO
erythro-trans-threo
mosin B
78
OH
O
C
12
H
25
15
9
20
O
4
ent-71
HO
HO
O
O
79
erythro-trans-threo
Scheme 10-15. Total synthesis of mosin B by Tanaka et al.
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