CAS: 26156-84-3; 1-Tritylpyridin-1-Ium Tetrafluoroborate

上下游产品

CAS号110-86-1 吡啶 | CAS号341-02-6 三苯基甲基四氟硼酸盐 | CAS号147701-15-3 [(3-diphenylpho... | CAS号192719-44-1 (2S,3S)-2-pheny... | CAS号79757-20-3 2-(吡啶-4-基)乙酸叔丁酯 | CAS号79757-29-2 2-pyridin-4-ylp... | CAS号79757-31-6 2-甲基-2-(4-吡啶)丙腈 | CAS号6311-86-0 2-Butanone,3,3-...

专利信息

专利号:US-4256646-A
优先权日:1978-06-29
标题:Synthesis of optically pure thromboxanes
发明人：HERNANDEZ OSCAR; BEND JOHN R; ELING THOMAS E; MCKINNEY JAMES D
权利人:US HEALTH EDUCATION & WELFARE
摘要:In an elegant stepwise process for the production of intermediates of thromboxanes such as TXB 2 from a chiral glucose starting material such as α-methylglucoside, those steps comprising: ##STR1## A key modification introduced in this synthetic sequence is the use of 4-dimethylaminopyridine for the selective alkylation of primary alcohols in the presence of unprotected secondary alcohols and for the controlled acylation of methylglucoside. The former application has large potential use in the synthesis of nucleosides, polynucleotides, and carbohydrate derivatives.

专利号:US-9676698-B2
优先权日:2010-07-20
标 题:Method of producing ingenol-3-angelate
发明人：HOGBERG THOMAS; GRUE-SORENSEN GUNNAR; LIANG XIFU; HORNEMAN ANNE MARIE; PETERSEN ANDERS KLARSKOV
权利人:LEO LABORATORIES LTD
摘要:The present invention relates to methods of producing ingenol-3-angelate (I) from ingenol (II). n n n n n n n n n n Furthermore, the invention relates to intermediates useful for the synthesis of ingenol-3-angelate (I) from ingenol (II) and to methods of producing said intermediates.

专利号:WO-2007009944-A1
优先权日:2005-07-21
标 题 :Tritylation reactions based on metallic catalysis
发明人：MALTESE MAURIZIO
权利人:UNIV ROMA; MALTESE MAURIZIO
摘要:The invention relates to a method for preparing tritylated compounds in which protic functional groups are protected with the triphenylmethyl group, method based on the homogeneous catalysis exercised by salts or metal complexes in organic solvents. The invention relates in particular to a method for the selective tritylation of some groups, obtained both directly and by selective detritylation, with methods based on metallic catalysis. The application to amino acids, typical substrates not suitable to be subjected as such to homogeneous tritylations in organic solvents, indicates the ability of the method to extend also to hydrophilic substrates. The method allows to obtain with high yield pertrityl amino acids, N-tritylamino acids or amino acids tritylated only in lateral chain, compounds which heretofore were either difficult to obtain in aqueous solvents or obtainable through indirect methods. All, in any case, are important intermediates in peptide synthesis.