Totalsynthesis of carbazomycins E and F was achieved by double functionalization of an aryne intermediate generated from a 2-aminobiphenyl derivative. The tethered amino group underwent nucleophilic addition to the aryne intermediate to construct the carbazole skeleton. The resulting carbanion was formylated to give the multiply substituted carbazole. This formyl group caused several problems. For
卡佐霉素 E 和 F 的全合成是通过对 2-氨基联苯衍生物生成的芳炔中间体进行双官能化来实现的。束缚的氨基与芳基中间体进行亲核加成以构建咔唑骨架。将所得碳负离子甲酰化,得到多取代的咔唑。该甲酰基引起了几个问题。例如,在不保护咔唑氮的情况下,很难对甲酰基附近的甲氧基进行区域选择性去甲基化。此外,在加热条件下用碘化铜和甲醇钠将甲酰基意外地还原成甲氧基甲基。该化合物在水存在下的氧化可有效获得甲酰化咔唑,从而首次全合成了卡佐霉素 F。
PROCESSES AND HOST CELLS FOR GENOME, PATHWAY, AND BIOMOLECULAR ENGINEERING
申请人:enEvolv, Inc.
公开号:EP3027754A1
公开(公告)日:2016-06-08
US9944925B2
申请人:——
公开号:US9944925B2
公开(公告)日:2018-04-17
[EN] PROCESSES AND HOST CELLS FOR GENOME, PATHWAY, AND BIOMOLECULAR ENGINEERING<br/>[FR] PROCÉDÉS ET CELLULES HÔTES POUR INGÉNIERIE BIOMOLÉCULAIRE, GÉNOMIQUE ET DE LA VOIE
申请人:ENEVOLV INC
公开号:WO2015017866A1
公开(公告)日:2015-02-05
The present disclosure provides compositions and methods for genomic engineering.