A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 176

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

Olefin metathesis in carotenoid synthesis. | LitMetric

Olefin metathesis in carotenoid synthesis.

Org Biomol Chem

Department of Chemistry and Open Research Center on Organic Tool Molecules, School of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda, Hyogo, 669-1337, Japan.

Published: November 2009

Olefin metathesis is a powerful and widely applicable synthetic method for carbon-carbon double bond formation. However, its application to the synthesis of conjugating polyene chains has been very limited because of possible undesired side reactions. We attempted to apply this method to the synthesis of symmetrical carotenoids. In this paper, the syntheses of violaxanthin and mimulaxanthin are described using the olefin metathesis protocol.

Download full-text PDF

Source
http://dx.doi.org/10.1039/b915390jDOI Listing

Publication Analysis

Top Keywords

olefin metathesis
12
metathesis carotenoid
4
carotenoid synthesis
4
synthesis olefin
4
metathesis powerful
4
powerful applicable
4
applicable synthetic
4
synthetic method
4
method carbon-carbon
4
carbon-carbon double
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!