Výsledky vyhledávání - "L. Sá e Melo"

Akademický článek

Androstane-3β,5α,6β,17β-tetrol trihydrate

Autor: L. C. R. Andrade, M. J. B. M. de Almeida, J. A. Paixão, J. F. S. Carvalho, M. L. Sá e Melo

Publikováno v: Acta Crystallographica Section E, Vol 67, Iss 7, Pp o1643-o1644 (2011)

The title hydrated tetrol, C19H32O4·3H2O, was synthesized by stereoselective reduction of the compound 3β,5α,6β-trihydroxyandrostan-17-one. All rings are fused trans. The organic molecules are connected head-to-tail along the c axis via O—H...O

Externí odkaz: https://doaj.org/article/0cb71137c7914faeaab1f527802b09d0

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Biocatalytic synthesis of cytotoxic acylglucosylsterols

Autor: M. M. Cruz Silva, S. RIVA, S. Simões, J. N. Moreira, A. Marques, M. L. Sá e Melo

Publikováno v: Medicinal Chemistry in the 21st Century, Lisbon (Portogallo), 2006
info:cnr-pdr/source/autori:M. M. Cruz Silva, S. RIVA, S. Simões, J. N. Moreira, A. Marques, M. L. Sá e Melo/congresso_nome:Medicinal Chemistry in the 21st Century/congresso_luogo:Lisbon (Portogallo)/congresso_data:2006/anno:2006/pagina_da:/pagina_a:/intervallo_pagine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=cnr_________::834327dc48d6537320c9bb7d9e10a556
http://www.cnr.it/prodotto/i/105706

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3 beta,7 alpha,12 alpha-triformyloxy-24-nor-5 beta-chol-22-ene

Autor: L C R, Andrade, J A, Paixão, M J M, de Almeida, E J Tavares, da Silva, M L, Sá e Melo, F M Fernandes, Roleira

Publikováno v: Acta crystallographica. Section C, Crystal structure communications. 60(Pt 1)

The title compound, alternatively called 24-nor-5 beta-chol-22-ene-3 beta,7 alpha,12 alpha-triyl triformate, C(26)H(38)O(6), has a cis junction between two of the six-membered rings. All three of the six-membered rings have chair conformations that a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d487916aaf52297930d770b8005c9150
https://pubmed.ncbi.nlm.nih.gov/14712055

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Synthesis and biological evaluation of two new radiolabelled estrogens: [125I](E)-3-methoxy-17alpha-iodovinylestra-1,3,5(10),6-tetraen-17beta-ol and

Autor: M C, Melo e Silva, L, Patrćio, L, Gano, M L, Sá e Melo, E, Inohae, S, Mataka, T, Thiemann

Publikováno v: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 54(2)

The synthesis of two novel radiolabelled estrogen derivatives, [125I](E)-3-methoxy-17alpha-iodovinylestra-1,3,5(10),6-tetraen-17beta-ol (E[125I]IVDE) and [125I](Z)-3-methoxy-17alpha-iodovinylestra-1,3,5(10),6-tetraen-17beta-ol (Z[125I]IVDE), was carr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::e2ec3a2e22d615e02b053ddd1753df77
https://pubmed.ncbi.nlm.nih.gov/11200884

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16alpha,17alpha-Epoxy-20-oxopregn-5-en-3beta-yl acetate

Autor: L C, Andrade, J A, Paixão, M J, de Almeida, R M, Martins, H I, Soares, G J, Morais, M J, Moreno, M L, Sá e Melo, A S, Campos Neves

Publikováno v: Acta crystallographica. Section C, Crystal structure communications. 57(Pt 5)

The title compound, C23H32O4, has a 3beta configuration, with the epoxy O atom at 16alpha,17alpha. Rings A and C have slightly distorted chair conformations. Because of the presence of the C5=C6 double bond, ring B assumes an 8beta,9alpha-half-chair

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::2f531c536873b03a2fb641f95ece1d14
https://pubmed.ncbi.nlm.nih.gov/11353261

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Pyridine-induced shifts in the 1H nuclear magnetic resonance spectra of 20-hydroxypregnane derivatives

Autor: G, Cooley, D N, Kirk, R E, Morgan, M L, Sá e Melo

Publikováno v: Journal of the Chemical Society. Perkin transactions 1. (12)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::38c2d548243f7f49390f78ad3ee88f9b
https://pubmed.ncbi.nlm.nih.gov/560385

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Improved preparation of pregn-5-ene-3 beta,16 alpha,20-triols and 5 alpha-pregnane-3 alpha,16 alpha,20-triols

Autor: D N, Kirk, M L, Sá e Melo

Publikováno v: Steroids. 34(6 Spec)

The compounds named in the title were prepared by routes which included the reduction of suitable 16 alpha,17-epoxypregnan-20-ones with aluminium amalgam to give 16 alpha-hydroxypregnan-20-ones, and reduction of the 20-oxo function either with sodium

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::656bf9a63618dec6a70c056e3b8d2aba
https://pubmed.ncbi.nlm.nih.gov/538775

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