The present invention discloses a process for preparation of N -acetyl-9-(l, 3-diacetoxy-2-propoxy methyl) guanine, starting with guanine, acetic anhydride and 2-acetoxy methoxy-1, 3-diacetoxy propane with or without solvent in presence of acid catalyst. The present invention also discloses the isolation of the N9 i...

Disclosed herein is a Process for one- pot syntyesis of 3 - (2-Thienyl thio) butyric acid comprises reaction of Thiophene with n-Buty1 Lithium and Sulphur in etherial solvent to obtain 2 - Mercapto Thieny1 Lithium which is reacted with Crotonic acid by Micheal reaction to obtain the title product. ...