Table 2:
Synthesis of the [5-(9
H
-purin-9-ylmethyl)-4,5-dihydroisoxazol-3-yl]methoxy-2
H
-chromen-2-ones
11a-g.
Entry
(Coumarinyloxy)acetaldehyde oxime
9-Allylpurine
Product (Yield %)
1
9a
10a
11a
(70)
2
9a
10b
11b
(67)
3
9b
10a
11c
(70)
4
9c
10a
11d
(72)
5
9c
10b
11e
(68)
6
9c
10c
11f
(65)
7
9d
10a
11g
(64)