TY - GEN AU - GILBERT,B AU - ANTONACCIO,L D AU - ARCHER,A A AU - DJERASSI,C TI - Alkaloid studies. XXIII. Isolation of four new Aspidosperma cylindrocarpin, refractine, pyrifoline, and pyrifolidine alkaloids SN - 0014-4754 PY - 1998///1101 KW - Alkaloids KW - chemistry KW - Aspidosperma KW - Humans N1 - Publication Type: Journal Article UR - https://doi.org/10.1007/BF02170260 ER -