Total syntheses of (+)-7-epi-goniofufurone, (+)-goniopypyrone and (+)-goniofufurone from a common precursor
作者:Veejendra K. Yadav、Divya Agrawal
DOI:10.1039/b713070h
日期:——
Total syntheses of (+)-7-epi-goniofufurone, (+)-goniopypyrone and (+)-goniofufurone have been achieved from an advanced commonprecursor formed from D-(+)-mannitol by changing the carbinol protection profile.
The stereoselective synthesis of (+)-goniodiol, a cytotoxic styryllactone, has been accomplished in 10 steps starting from inexpensive and readily available d-manitol and δ-gluconolactone involving the direct and straightforward reaction conditions of Grignard addition, chain elongation, and hydroboration, thus making the synthesis simple and convenient.
Synthesis of (+)-goniothalesdiol and (+)-7-epi-goniothalesdiol
作者:Matej Babjak、Peter Kapitán、Tibor Gracza
DOI:10.1016/j.tet.2005.01.004
日期:2005.2
A total synthesis of (+)-goniothalesdiol, a 3,4-dihydroxy-2,5 -disubstituted tetrahydrofuran isolated from Goniothalamus borneensis (Annonaceae), and its 7-epimer is reported using oxycarbonylation methodology for construction of polyhydroxylated substituted heterocycles. Diastereoselectivity of addition of organometallic reagents to 2,3-O-isopropylidene-D-threose derivatives using theoretical calculations based on the semiempirical PM5 was studied. (C) 2005 Elsevier Ltd. All rights reserved.