Synthesis of benzofuroquinolizine for α-2 adrenoceptor antagonist MK-912: an O-analogue of the Pictet-Spengler reaction
摘要:
Efficient synthesis of benzofuroquinolizine ketone 1 was accomplished in four steps from ethyl 3-benzofuranacetate. The O-analogue of the Pictet-Spengler cyclization was used to form the benzofuroquinolizine ring structure as a key step. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis of benzofuroquinolizine for α-2 adrenoceptor antagonist MK-912: an O-analogue of the Pictet-Spengler reaction
摘要:
Efficient synthesis of benzofuroquinolizine ketone 1 was accomplished in four steps from ethyl 3-benzofuranacetate. The O-analogue of the Pictet-Spengler cyclization was used to form the benzofuroquinolizine ring structure as a key step. (C) 1999 Elsevier Science Ltd. All rights reserved.
Photo-Induced Radical Cyclization of Aromatic Halides with Sodium Borohydride
作者:Zhong-Li Liu、Wei Yu、Qiang Liu、Bing Han、Wei Zhang、Li Yang
DOI:10.1055/s-2005-872243
日期:——
Direct UV irradiation of ortho-allyloxy- and ortho-but-3-enyloxy-iodo- and bromo-benzenes in the presence of NaBH4 or NaBH3CN gave radical cyclization products in high yield.
Novel azetidinone-containing compounds are useful in the treatment or prevention of various human diseases. For example, they can be employed in lowering plasma levels of a sterol, such as cholesterol. Thus, these compounds can be administered in the contexts of methods for treating and/or preventing diabetes, obesity, and atherosclerosis, respectively.
Synthesis of benzofuroquinolizine for α-2 adrenoceptor antagonist MK-912: an O-analogue of the Pictet-Spengler reaction
Efficient synthesis of benzofuroquinolizine ketone 1 was accomplished in four steps from ethyl 3-benzofuranacetate. The O-analogue of the Pictet-Spengler cyclization was used to form the benzofuroquinolizine ring structure as a key step. (C) 1999 Elsevier Science Ltd. All rights reserved.