A carbohydrate approach for the formal total synthesis of the prostacyclin analogue (16S)-iloprost
摘要:
The formal total synthesis of the synthetic and stable analogue of prostacyclin, (16S)- iloprost is described via a convergent synthesis starting from readily available D-glucose. Julia olefination and the aldol reaction are the key steps involved in the synthesis. (C) 2012 Elsevier Ltd. All rights reserved.
An Unprecedented Silver Salt Effect Switches the Facial Selectivity in the Vinylogous Mukaiyama Aldol Reaction
作者:Yufan Liang、Lin Wang、Rong Zhu、Lujiang Deng、Yunfang Yang、Junmin Quan、Jiahua Chen、Zhen Yang
DOI:10.1002/adsc.201000420
日期:2010.10.4
Silver hexafluroantimonate was identified as a highly efficient agent to reverse the facial selectivity of the titanium chloride-mediated vinylogous Mukaiyama aldol reaction (VMAR), and this unprecedented reaction provides a concise, diastereoselective synthesis of δ-hydroxy-α,γ-dimethyl-α,β-unsaturated carbonyl units from readily available chiral vinylketene silyl N,O-acetal 6 and ethyl glyoxylate