Synthesis of (+)-goniopypyrone and (+)-goniotriol using Pd-catalyzed carbonylation
摘要:
Syntheses of (+)-goniopypyrone and (+)-goniotriol isolated from Goniothalamus giganteus were achieved. The key steps involve Pd-catalyzed carbonylation for lactone ring formation and diastereoselective reduction of ynone using the (R)-CBS catalyst and borane dimethyl sulfide complex. (C) 2019 Elsevier Ltd. All rights reserved.
Chiral Pool Based Efficient Synthesis of the Aminocyclitol Core and Furanoside of (−)- Hygromycin A: Formal Total Synthesis of (−)-Hygromycin A
作者:Hong-Jay Lo、Yuan-Kang Chang、Tu-Hsin Yan
DOI:10.1021/ol3028237
日期:2012.12.7
and inexpensive C2-symmetric tartaric acids to the chiral O-isopropylidenebenzooxazole—a convenient precursor to the aminocyclitol core of hygromycin A as well as the chiral γ-disilyloxybutyrolactone—a pivotal intermediate to approach to the furanoside of hygromycin A.
Syntheses of (+)-goniopypyrone and (+)-goniotriol isolated from Goniothalamus giganteus were achieved. The key steps involve Pd-catalyzed carbonylation for lactone ring formation and diastereoselective reduction of ynone using the (R)-CBS catalyst and borane dimethyl sulfide complex. (C) 2019 Elsevier Ltd. All rights reserved.