Convenient synthesis of 6-alkyl phenanthridines and 1-alkyl isoquinolines via silver-catalyzed oxidative radical decarboxylation
作者:Qian Yao、Xin Zhou、Xiuli Zhang、Cong Wang、Peng Wang、Ming Li
DOI:10.1039/c6ob02331b
日期:——
convenient and efficient protocol for the synthesis of 6-alkyl phenanthridines and 1-alkyl isoquinolines has been developed. The reaction relies on the coupling of 2-isocyanobiphenyls and vinyl isonitriles with alkyl radicals formed by the silver-catalyzed decarboxylation of stoichiometric aliphatic carboxylic acids, and affords diverse phenanthridine and isoquinoline derivatives under mild reaction conditions
L-SUCCINYLAMINOACYLASE AND PROCESS FOR PRODUCING L-AMINO ACID USING IT
申请人:Toda Atsushi
公开号:US20110244530A1
公开(公告)日:2011-10-06
The present invention provides an L-aminoacylase which is able to produce L-tert-leucine being useful as an intermediate for pharmaceuticals.
A protein which is characterized in being represented by any of the following (a) to (d): (a) a protein coded by a gene consisting of a nucleic acid sequence shown in SEQ ID No: 1; (b) a protein consisting of an amino acid sequence shown in SEQ ID No: 2; (c) a protein coded by a polynucleotide which hybridizes under a stringent condition with a nucleic acid sequence which is complementary to the nucleic acid sequence shown in SEQ ID No: 1 and having an L-succinylaminoacylase activity; and (d) a protein which consists of an amino acid sequence where one or several amino acid (s) is/are substituted, deleted, inserted and/or added in the protein consisting of the amino acid sequence shown in SEQ ID No: 2 and has an L-succinylaminoacylase activity.
本发明提供了一种能够产生L-tert-亮氨酸的L-氨基酰酶,该酶可作为制药中间体。一种蛋白质,其特征在于由以下任一表示:(a)由包含在序列号为SEQ ID No: 1的核酸序列中的基因编码的蛋白质;(b)由序列号为SEQ ID No: 2的氨基酸序列组成的蛋白质;(c)由与序列号为SEQ ID No: 1中显示的核酸序列互补的核酸序列在严格条件下杂交的多核苷酸编码的蛋白质,具有L-琥珀酰氨基酰酶活性;以及(d)由一个或多个氨基酸在序列号为SEQ ID No: 2中显示的氨基酸序列组成的蛋白质中被替代、删除、插入和/或添加的氨基酸,具有L-琥珀酰氨基酰酶活性。