I'm sorry for this cross-posting mail, but it is urgent. would u like to
provide me the experimental part of the flowing papers which is about
synthesis of the tetracycline analog with Mannich Reaction. they are
unavailble in our college.
1. Acta Polon. Pharm., 1965, 22(5): 393
2. ibid, 1964, 21(5):421
3. Leningrad Nauk Issled Inst. Antibiot, 1972(9), 84
Thank you in advance.
Guandong Medical College