title: [9-Deazapurines from pyrimido (4.5-b)(1,4) thiazines (author's transl)].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D011687:Purines / Q000138:chemical synthesis*; D013843:Thiazines
chemical_list: D011687:Purines; D013843:Thiazines
vernacular_title: 9-Deazapurine aus Pyrimido [4.5-b][1.4] thiazinen.