{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,10]],"date-time":"2026-02-10T17:16:02Z","timestamp":1770743762830,"version":"3.49.0"},"reference-count":18,"publisher":"Elsevier BV","issue":"47","license":[{"start":{"date-parts":[[2001,11,1]],"date-time":"2001-11-01T00:00:00Z","timestamp":1004572800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Tetrahedron Letters"],"published-print":{"date-parts":[[2001,11]]},"DOI":"10.1016\/s0040-4039(01)01801-9","type":"journal-article","created":{"date-parts":[[2003,3,26]],"date-time":"2003-03-26T01:16:11Z","timestamp":1048641371000},"page":"8307-8309","source":"Crossref","is-referenced-by-count":16,"title":["Hetero-Diels\u2013Alder reactions of \u03b2-imino-meso-tetraphenylporphyrin derivatives: a new approach to pyrido[2,3-b]porphyrins"],"prefix":"10.1016","volume":"42","author":[{"given":"Cristina M.A","family":"Alonso","sequence":"first","affiliation":[]},{"given":"Maria G.P.M.S","family":"Neves","sequence":"additional","affiliation":[]},{"given":"Augusto C","family":"Tom\u00e9","sequence":"additional","affiliation":[]},{"given":"Artur M.S","family":"Silva","sequence":"additional","affiliation":[]},{"given":"Jos\u00e9 A.S","family":"Cavaleiro","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/S0040-4039(01)01801-9_BIB2","doi-asserted-by":"crossref","first-page":"3569","DOI":"10.1016\/0040-4039(96)00623-5","volume":"37","author":"Faustino","year":"1996","journal-title":"Tetrahedron Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB3","doi-asserted-by":"crossref","first-page":"1119","DOI":"10.1246\/cl.1996.1119","author":"Zeng","year":"1996","journal-title":"Chem. Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB4","doi-asserted-by":"crossref","first-page":"1377","DOI":"10.1039\/p19920001377","author":"Pandey","year":"1992","journal-title":"J. Chem. Soc., Perkin Trans. 1"},{"key":"10.1016\/S0040-4039(01)01801-9_BIB6","doi-asserted-by":"crossref","first-page":"7603","DOI":"10.1016\/0040-4039(95)01633-S","volume":"36","author":"Morgan","year":"1995","journal-title":"Tetrahedron Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB7","doi-asserted-by":"crossref","first-page":"776","DOI":"10.1039\/C39850000776","author":"Cavaleiro","year":"1985","journal-title":"J. Chem. Soc., Chem. Commun."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB8","doi-asserted-by":"crossref","first-page":"5679","DOI":"10.1016\/S0040-4039(00)00923-0","volume":"41","author":"Alonso","year":"2000","journal-title":"Tetrahedron Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB10","doi-asserted-by":"crossref","first-page":"1199","DOI":"10.1039\/a702504a","author":"Tom\u00e9","year":"1997","journal-title":"Chem. Commun."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB11","doi-asserted-by":"crossref","first-page":"3065","DOI":"10.1016\/S0040-4039(00)00336-1","volume":"41","author":"Silva","year":"2000","journal-title":"Tetrahedron Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB12","doi-asserted-by":"crossref","first-page":"532","DOI":"10.1002\/1099-1409(200008)4:5<532::AID-JPP267>3.0.CO;2-0","volume":"4","author":"Tom\u00e9","year":"2000","journal-title":"J. Porphyr. Phthalocyanines"},{"key":"10.1016\/S0040-4039(01)01801-9_BIB14","first-page":"423","author":"Kobayashi","year":"1985","journal-title":"Chem. Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB15","doi-asserted-by":"crossref","first-page":"801","DOI":"10.1055\/s-1995-4002","author":"Makioka","year":"1995","journal-title":"Synthesis"},{"key":"10.1016\/S0040-4039(01)01801-9_BIB16","doi-asserted-by":"crossref","first-page":"1195","DOI":"10.1055\/s-1995-4066","author":"Kobayashi","year":"1995","journal-title":"Synthesis"},{"key":"10.1016\/S0040-4039(01)01801-9_BIB17","doi-asserted-by":"crossref","first-page":"7357","DOI":"10.1016\/0040-4039(96)01655-3","volume":"37","author":"Ishitani","year":"1996","journal-title":"Tetrahedron Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB19","doi-asserted-by":"crossref","first-page":"4125","DOI":"10.1016\/S0040-4020(98)00140-9","volume":"54","author":"Baudelle","year":"1998","journal-title":"Tetrahedron"},{"key":"10.1016\/S0040-4039(01)01801-9_BIB20","doi-asserted-by":"crossref","first-page":"2309","DOI":"10.1016\/S0040-4039(00)00156-8","volume":"41","author":"Jones","year":"2000","journal-title":"Tetrahedron Lett."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB21","doi-asserted-by":"crossref","first-page":"2513","DOI":"10.1002\/1099-0690(200107)2001:13<2513::AID-EJOC2513>3.0.CO;2-A","author":"Sartori","year":"2001","journal-title":"Eur. J. Org. Chem."},{"key":"10.1016\/S0040-4039(01)01801-9_BIB22","doi-asserted-by":"crossref","first-page":"3419","DOI":"10.1016\/S0040-4020(01)00185-5","volume":"57","author":"Nagarajan","year":"2001","journal-title":"Tetrahedron"},{"key":"10.1016\/S0040-4039(01)01801-9_BIB23","doi-asserted-by":"crossref","first-page":"2757","DOI":"10.1016\/S0040-4039(97)00464-4","volume":"38","author":"Alonso","year":"1997","journal-title":"Tetrahedron Lett."}],"container-title":["Tetrahedron Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0040403901018019?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0040403901018019?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,29]],"date-time":"2019-04-29T20:25:22Z","timestamp":1556569522000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0040403901018019"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2001,11]]},"references-count":18,"journal-issue":{"issue":"47","published-print":{"date-parts":[[2001,11]]}},"alternative-id":["S0040403901018019"],"URL":"https:\/\/doi.org\/10.1016\/s0040-4039(01)01801-9","relation":{},"ISSN":["0040-4039"],"issn-type":[{"value":"0040-4039","type":"print"}],"subject":[],"published":{"date-parts":[[2001,11]]}}}