Identification of very-long-chain polyunsaturated fatty acids from Amphidinium carterae by atmospheric pressure chemical ionization liquid chromatography–mass spectroscopy
摘要:
A method is described for the enrichment of very-long-chain polyunsaturated fatty acids (VLCPUFAs) from total fatty acids of Amphidinium carterae and their identification as picolinyl esters by means of microbore liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization (LC-MS/APCI). The combination of argentation TLC and LC-MS/APCI was used to identify unusual VLCPUFAs up to hexatriacontaoctaenoic acid. Two acids, 36:7n-6 and 36:8n-3, were also synthesized to unambiguously confirm their structure. The possibilities of VLCPUFAs biosynthesis are proposed. (C) 2008 Elsevier Ltd. All rights reserved.
Identification of very-long-chain polyunsaturated fatty acids from Amphidinium carterae by atmospheric pressure chemical ionization liquid chromatography–mass spectroscopy
摘要:
A method is described for the enrichment of very-long-chain polyunsaturated fatty acids (VLCPUFAs) from total fatty acids of Amphidinium carterae and their identification as picolinyl esters by means of microbore liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization (LC-MS/APCI). The combination of argentation TLC and LC-MS/APCI was used to identify unusual VLCPUFAs up to hexatriacontaoctaenoic acid. Two acids, 36:7n-6 and 36:8n-3, were also synthesized to unambiguously confirm their structure. The possibilities of VLCPUFAs biosynthesis are proposed. (C) 2008 Elsevier Ltd. All rights reserved.
METHODS FOR THE SYNTHESIS OF 13C LABELED PLASMALOGEN
申请人:PHENOMENOME DISCOVERIES INC.
公开号:US20140323749A1
公开(公告)日:2014-10-30
A method for preparing
13
C labeled plasmalogens as represented by Formula B: —The method involves producing a
13
C labeled cyclic plasmalogen precursor of Formula A, and conversion of the precursor to a plasmalogen of Formula B. These plasmalogens may potentially be useful in the determination of both the mechanism of action as well as the fate of plasmalogens in the body.
METHODS FOR THE SYNTHESIS OF 13C LABELED DHA AND USE AS A REFERENCE STANDARD
申请人:PHENOMENOME DISCOVERIES INC.
公开号:US20140336397A1
公开(公告)日:2014-11-13
A method for preparing
13
C labeled docosahexaenoic acid (DHA) represented by Formula A: The method comprises the conversion of 2-pentyn-1-ol to
13
C labeled DHA by reaction with propargyl alcohol,
13
C labeled propargyl alcohol and methyl pent-4-ynoate. The various steps involved include tosylation, coupling, bromination, selective hydrogenation and ester hydrolysis to obtain the final product.
[EN] METHODS FOR THE SYNTHESIS OF 13C LABELED DHA AND USE AS A REFERENCE STANDARD<br/>[FR] PROCÉDÉS DE SYNTHÈSE DE DHA MARQUÉ PAR 13C ET SON UTILISATION COMME ÉTALON DE RÉFÉRENCE
申请人:PHENOMENOME DISCOVERIES INC
公开号:WO2013071411A1
公开(公告)日:2013-05-23
A method for preparing 13C labeled docosahexaenoic acid (DHA) represented by Formula A: The method comprises the conversion of 2-pentyn-l-ol to 13C labeled DHA by reaction with propargyl alcohol, 13C labeled propargyl alcohol and methyl pent-4-ynoate. The various steps involved include tosylation, coupling, bromination, selective hydrogenation and ester hydrolysis to obtain the final product.
Identification of very-long-chain polyunsaturated fatty acids from Amphidinium carterae by atmospheric pressure chemical ionization liquid chromatography–mass spectroscopy
作者:Tomáš Řezanka、Linda Nedbalová、Karel Sigler
DOI:10.1016/j.phytochem.2008.06.011
日期:2008.9
A method is described for the enrichment of very-long-chain polyunsaturated fatty acids (VLCPUFAs) from total fatty acids of Amphidinium carterae and their identification as picolinyl esters by means of microbore liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization (LC-MS/APCI). The combination of argentation TLC and LC-MS/APCI was used to identify unusual VLCPUFAs up to hexatriacontaoctaenoic acid. Two acids, 36:7n-6 and 36:8n-3, were also synthesized to unambiguously confirm their structure. The possibilities of VLCPUFAs biosynthesis are proposed. (C) 2008 Elsevier Ltd. All rights reserved.