Table 4: Synthesis of the [3-(9H-purin-9-ylmethyl)isoxazol-5-yl]methoxy-2H-chromen-2-ones 13a-i.

Entry	Oxime	Propargyloxycoumarin	Product (Yield %)
1	2a	12a	13a (64), 5a (16), 1a (9)
2	2b	12a	13b (62), 5b (18), 1b (9)
3	2a	12b	13c (57), 5a (19), 1a (10)
4	2b	12b	13d (54), 5b (19), 1b (12)
5	2a	12c	13e (56), 5a (19), 1a (10)
6	2b	12c	13f (53), 5b (19), 1b (11)
7	2c	12c	13g (53), 5c (18), 1c (11)
8	2a	12d	13h (60), 5a (16), 1a (10)
9	2b	12d	13i (58), 5b (16), 1b (10)