专利号:US-12091696-B2 优先权日:2022-08-10 标 题 :O-methyltransferase protein with highly specific catalytic function for multiple bias parent nuclei and encoding gene and use thereof 发明人:CHEN SHA; YU YUETONG 权利人:INST CHINESE MATERIA MEDICA CHINA ACADEMY OF CMS 摘要:The present disclosure provides an O-methyltransferase protein with a highly specific catalytic function for multiple benzylisoquinoline alkaloids (BIAs) parent nuclei and an encoding gene and use thereof. Compared with wild-type O-methyltransferase, the O-methyltransferase protein (SEQ ID NO: 2) shows an enhanced enzymatic activity and a wider substrate scope. The O-methyltransferase protein can catalyze O-methylation of backbones from three BIAs, including monobenzylisoquinolines (norcoclaurine, coclaurine, and N-methylcoclaurine), aporphines (asimilobine and N-methylasimilobine), and protoberberines (scoulerine and tetrahydrocolumbamine). Meanwhile, this O-methyltransferase protein is highly regioselective for each backbone. The O-methyltransferase protein catalyzes methylation of the monobenzylisoquinolines at 6-OH and 7-OH, is only active on 6-OH of the backbone of the aporphines, and mainly catalyzes methylation of the protoberberines at 2-OH. Moreover, the O-methyltransferase protein has a stronger catalytic activity and can be used as a biocatalyst for the semi-synthesis of related compounds.
专利号:US-4013664-A 优先权日:1973-06-20 标 题:Synthesis of hernandaline 发明人:KUPCHAN S MORRIS; KAMESWARAN VENKATARAMAN 权利人:RESEARCH CORP 摘要:There is disclosed a novel and improved method of synthesizing aporphines utilizing the Pschorr cyclization of 1-(2'-aminobenzyl)-7 hydroxy-1,2,3,4-tetrahydroisoquinolines in place of the corresponding 7-methoxy compounds. n In the novel process of the present invention the amino group is diazotized and cyclized in the presence of copper powder.
专利号:EP-4495102-A4 优先权日:2022-03-22 标 题 :PROCESS FOR THE SYNTHESIS OF NUCIFERINE OR A DERIVATIVE THEREOF, NUCIFERINE DERIVATIVE AND USE THEREOF
专利号:CN-114891840-A 优先权日:2022-05-23 标 题 :Application of lotus leaf O-methyltransferase and its encoding gene in the synthesis of benzylisoquinoline alkaloids and phenylpropionic acids
专利号:CN-116478941-A 优先权日:2023-02-27 标 题:Application of CYP80G protein and its coding gene in catalyzing the synthesis of aporphine alkaloids in lotus leaf
专利号:CN-114891840-B 优先权日:2022-05-23 标题:Lotus leaf O-methyltransferase and application of encoding gene thereof in synthesis of benzyl isoquinoline alkaloid and phenylpropionic acid compounds
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