The Reaction of 4,5-Epoxy-2(E)-hexenoate and Secondary Amines, Total Synthesis of (-)-Osmundalactone and (-)-Forosamine
作者:Hiroyuki Akita、Machiko Ono、Chikako Saotome
DOI:10.3987/com-99-8567
日期:——
Synthesis of the Deoxyaminosugar (+)-<scp>d</scp>-Forosamine via a Novel Domino−Knoevenagel−Hetero-Diels−Alder Reaction
作者:L. F. Tietze、N. Böhnke、S. Dietz
DOI:10.1021/ol900899a
日期:2009.7.2
A synthesis of (+)-D-forosamine was developed. The sugar-scaffold was constructed by a new domino-Knoevenagel-hetero-Diels-Alder reaction from easily available starting materials.
The Reaction of (4R,5R)- and (4S,5S)-4,5-Epoxy-2(E)-Hexenoates and Secondary Amines.
作者:Chikako SAOTOME、Machiko ONO、Hiroyuki AKITA
DOI:10.1248/cpb.49.849
日期:——
A reaction of methyl (4R,5R)-4,5-epoxy-2(E)-hexenoate 1 with N-benzylmethylamine gave a diastereomerically pure methyl (4R,5R)-4,5-epoxy-(3S)-N-benzylmethylamino hexanoate 6 and methyl (4S,5R)-4-N-benzyl-methylamino-5-hydroxy-2(E)-hexenoate 7. The former was chemoenzymatically converted to (-)-osmundalactone 11, which is an aglycone of osmundalin. On the other hand, the directly conjugated addition