Lactam and acid amide acetals 68. 1-Cyanomethyl-2-pyrrolidone diethylacetal in the synthesis of 7,8-trimethylenepurine derivatives
1991 ◽
Vol 27
(6)
◽
pp. 590-594
◽
1991 ◽
Vol 27
(3)
◽
pp. 278-283
◽