摘要: Stereospecific conversion of 9,19-cyclo-4,4,14α-trimethyl-3β-acetoxy-5α,9β-pregnan-20-one, readily accessible from cycloartenol/cyclolaudenol, into three closely related Buxus alkaloids—buxandonine, cyclo-protobuxine-F and cycloprotobuxine-A—is described.
elsevier.com
sci-hub.se 参考文章(10)
A.S. Narula, Sukh Dev, Higher isoprenoids—III : Degradation of iso-octenyl side-chain of tetracyclic tri-terpenoids—a novel approach Tetrahedron. ,vol. 27, pp. 1119- 1127 ,(1971) , 10.1016/S0040-4020(01)90859-2
Chandan Singh, Sukh Dev, Higher isoprenoids—V Tetrahedron. ,vol. 33, pp. 817- 819 ,(1977) , 10.1016/0040-4020(77)80199-3
R. Goutarel, C. Conreur, L. Djakouré, M. Leboeuf, A. Cavé, Alcaloïdes stéroïdiques—LXXVII Tetrahedron. ,vol. 24, pp. 7013- 7026 ,(1968) , 10.1016/S0040-4020(01)96818-8
Ajay K. Bose, Shuyen Harrison, Leon Farber, Stereochemistry of Terpenes. IV. The Configuration of Some Amines1 Journal of Organic Chemistry. ,vol. 28, pp. 1223- 1225 ,(1963) , 10.1021/JO01040A013
W Hertler, E Corey, Notes. A Novel Preparation of Isonitriles Journal of Organic Chemistry. ,vol. 23, pp. 1221- 1222 ,(1958) , 10.1021/JO01102A612
A. Cavé, C. Kan-Fan, P. Potier, J. Le Men, M.-M. Janot, Oxydation de quelques amines tertiaires par l'anhydride chromique dans la pyridine Tetrahedron. ,vol. 23, pp. 4691- 4696 ,(1967) , 10.1016/S0040-4020(01)92567-0
Carl. Djerassi, R. R. Engle, A. Bowers, Notes - The Direct Conversion of Steroidal Δ5-3β-Alcohols to Δ5- and Δ4-3-Ketones Journal of Organic Chemistry. ,vol. 21, pp. 1547- 1549 ,(1956) , 10.1021/JO01118A627
H. T. Clarke, H. B. Gillespie, S. Z. Weisshaus, The Action of Formaldehyde on Amines and Amino Acids1 Journal of the American Chemical Society. ,vol. 55, pp. 4571- 4587 ,(1933) , 10.1021/JA01338A041
G. Adam, B. Voigt, K. Schreiber, Sterine und Triterpenoide. XIII. Abbau von Cycloartenol zu 3β‐Hydroxy‐4,4,14α‐trimethyl‐9,19‐cyclo‐5α‐pregnanon‐(20) Journal Fur Praktische Chemie-chemiker-zeitung. ,vol. 312, pp. 1027- 1042 ,(1970) , 10.1002/PRAC.19703120608
T. Nakano, M. Hasegawa, 1242. Buxus alkaloids. Part VI. The constitutions of cyclomicrobuxine, cyclomicrobuxinine, and alkaloid-L Journal of the Chemical Society (Resumed). pp. 6688- 6694 ,(1965) , 10.1039/JR9650006688