Synthesis of 1-(2,3-dideoxy-2-fluoro-.beta.-D-threo-pentofuranosyl)cytosine (F-ddC). A promising agent for the treatment of acquired immune deficiency syndrome
摘要:
A new and practical synthesis of a fluorinated analogue of 2',3'-dideoxycytidine (ddC), 1-(2,3-dideoxy-2-fluoro-beta-D-threo-pentofuranosyl)cytosine (F-ddC), is described. The key feature in the synthesis is the use of the selectively protected 2,4,5-trihydroxypentanoic acid derivative 15 as a chiral pool synthon.
The synthesis of kibdelone C, a polycyclic natural xanthone isolated from a soil actinomycete, was achieved through a convergent approach. A 6π-electrocyclization was applied to construct the highly substituted dihydrophenanthrenol fragment (B–C–D ring). InBr3-promoted lactonization was employed to build the isocoumarin ring, which served as a common precursor for the formation of isoquinolinone ring
A Chiron Approach to the Total Synthesis of (+)-Aculeatin D
作者:Zhi-Bin Zhen、Jian Gao、Yikang Wu
DOI:10.1021/jo801296x
日期:2008.9.19
A synthesis of natural aculeatin D has been achieved, with the key stereogenic centers taken from inexpensive and readily available D-xylose. In elaboration of D-xylose into a desired form readily applicable in synthesis a previously misinterpreted and overlooked abnormal selectivity in hydroxyl protection was noticed and exploited. Protocols were developed for monotosylation of a triol insoluble in
A practical stereoselective synthesis to obtain the substituted furan ring as the substructure of eribulin is developed. An asymmetric syn-aldol and intramolecular oxy-Michael were two key steps in our approach. The functionalized furan derivatives were then utilized further to build the 14- and 12-membered macrocyclic diversity as trans- and cis-fused (C-29 and C-30) compounds. This is the first report
Synthesis of 1-(2,3-dideoxy-2-fluoro-.beta.-D-threo-pentofuranosyl)cytosine (F-ddC). A promising agent for the treatment of acquired immune deficiency syndrome
作者:Masami Okabe、Ruen Chu Sun、Gladys B. Zenchoff
DOI:10.1021/jo00014a013
日期:1991.7
A new and practical synthesis of a fluorinated analogue of 2',3'-dideoxycytidine (ddC), 1-(2,3-dideoxy-2-fluoro-beta-D-threo-pentofuranosyl)cytosine (F-ddC), is described. The key feature in the synthesis is the use of the selectively protected 2,4,5-trihydroxypentanoic acid derivative 15 as a chiral pool synthon.