4-[2-[6-(phenylamino)purin-9-yl]ethoxy]benzaldehyde

(6-methoxypurin-9-yl)acetic acid methyl ester

2-(6-methoxypurin-9-yl)ethanol

2-(6-phenoxypurin-9-yl)ethanol

2-[6-(phenylthio)purin-9-yl]ethanol