Guest guest Posted November 25, 2000 Report Share Posted November 25, 2000 Hi Mirtes, I must warn you that portuguese is not really a language that I know, but my suggestion would be either " uma unidade exocíclica alfa-metileno-beta-lactona " or " um grupo exocíclico alfa-metileno-beta-lactona " Hope that this is at least of some help. Folke -----Ursprungligt meddelande----- Från: Mirtes Pinheiro Skickat: den 25 november 2000 02:57 Till: medical_translationegroups Ämne: Química Por favor, preciso de ajuda no trecho em maiúsculas: Sesquiterpene lactones are thought to be allergenic principles in dandelion. These compounds contain AN EXOCYCLIC ALFA-METHYLENE BETA-LACTONE MOIETY, which is thought to be a prerequisite for allergenic activity of sesquiterpene lactones . Mirtes URL: www./group/medical_translation To unsubscribe, please send an *empty* message to medical_translation-UNSUBSCRIBEegroups Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 25, 2000 Report Share Posted November 25, 2000 Hi Mirtes, I must warn you that portuguese is not really a language that I know, but my suggestion would be either " uma unidade exocíclica alfa-metileno-beta-lactona " or " um grupo exocíclico alfa-metileno-beta-lactona " Hope that this is at least of some help. Folke -----Ursprungligt meddelande----- Från: Mirtes Pinheiro Skickat: den 25 november 2000 02:57 Till: medical_translationegroups Ämne: Química Por favor, preciso de ajuda no trecho em maiúsculas: Sesquiterpene lactones are thought to be allergenic principles in dandelion. These compounds contain AN EXOCYCLIC ALFA-METHYLENE BETA-LACTONE MOIETY, which is thought to be a prerequisite for allergenic activity of sesquiterpene lactones . Mirtes URL: www./group/medical_translation To unsubscribe, please send an *empty* message to medical_translation-UNSUBSCRIBEegroups Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 26, 2000 Report Share Posted November 26, 2000 I forgot to mention a URL that might be of interest to you: http://correio.cc.fc.ul.pt/~dqb/docentes/cborges.html Docente Borges does not seem to have studied sesquiterpenes but derivatives of other carbohydrates, but they still contain " a unidade a-metileno-b-lactona " ( " a " and " b " being written in the greek alphabet). Regards, Folke Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 26, 2000 Report Share Posted November 26, 2000 I forgot to mention a URL that might be of interest to you: http://correio.cc.fc.ul.pt/~dqb/docentes/cborges.html Docente Borges does not seem to have studied sesquiterpenes but derivatives of other carbohydrates, but they still contain " a unidade a-metileno-b-lactona " ( " a " and " b " being written in the greek alphabet). Regards, Folke Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 16, 2001 Report Share Posted February 16, 2001 Hi Mirtes I am a chemist. It seems that you have three different types of xanthones in Polyfala triphylla, namely: 1) B ring oxygen-free; 2) trioxygenated and 3) glucosyloxy. I think there is a comma missing betwwen " oxygen-free " and " trioxygenated " . Regarding glucosyloxy in Portuguese, well, I can only read Portuguese (I should go to Florianopolis more often). In Spanish it is " glucosiloxi " . I am sending the formula of xanthone (the parent compound) to your address because it would not appear in yahoogroups. Best regards Gerardo Ferrer-Sueta Xanthen-9-one C13H8O2 MW 196.2 CAS Number 90-47-1 -----Mensaje original----- Tem algum químico de plantão? Não consigo entender isso: Polyfala triphylla contains B ring oxygen-free trioxygenated- and glucosyloxy-xanthones. O anel B é isento de oxigênio e trioxigenado ao mesmo tempo? Só encontro referência a " glucosyloxy " em inglês. Não imagino como fica em português. Obrigada Mirtes --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.230 / Virus Database: 111 - Release Date: 25/01/01 Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 16, 2001 Report Share Posted February 16, 2001 Hi Mirtes I am a chemist. It seems that you have three different types of xanthones in Polyfala triphylla, namely: 1) B ring oxygen-free; 2) trioxygenated and 3) glucosyloxy. I think there is a comma missing betwwen " oxygen-free " and " trioxygenated " . Regarding glucosyloxy in Portuguese, well, I can only read Portuguese (I should go to Florianopolis more often). In Spanish it is " glucosiloxi " . I am sending the formula of xanthone (the parent compound) to your address because it would not appear in yahoogroups. Best regards Gerardo Ferrer-Sueta Xanthen-9-one C13H8O2 MW 196.2 CAS Number 90-47-1 -----Mensaje original----- Tem algum químico de plantão? Não consigo entender isso: Polyfala triphylla contains B ring oxygen-free trioxygenated- and glucosyloxy-xanthones. O anel B é isento de oxigênio e trioxigenado ao mesmo tempo? Só encontro referência a " glucosyloxy " em inglês. Não imagino como fica em português. Obrigada Mirtes --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.230 / Virus Database: 111 - Release Date: 25/01/01 Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 17, 2001 Report Share Posted February 17, 2001 Mirtes Pinheiro ha scritto: > > Polyfala triphylla contains B ring oxygen-free trioxygenated- and > glucosyloxy-xanthones. As Gerardo says, there's a comma missing after " oxygen-free " . > > O anel B é isento de oxigênio e trioxigenado ao mesmo tempo? > Be careful here; it isn't the B ring that's oxygen-free, but the xanthones. You should read the sentence as follows: Polyfala triphylla contains oxygen-free xanthones, trioxygenated xanthones and glucosyloxyxanthones with a B ring. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 17, 2001 Report Share Posted February 17, 2001 Mirtes Pinheiro ha scritto: > > Polyfala triphylla contains B ring oxygen-free trioxygenated- and > glucosyloxy-xanthones. As Gerardo says, there's a comma missing after " oxygen-free " . > > O anel B é isento de oxigênio e trioxigenado ao mesmo tempo? > Be careful here; it isn't the B ring that's oxygen-free, but the xanthones. You should read the sentence as follows: Polyfala triphylla contains oxygen-free xanthones, trioxygenated xanthones and glucosyloxyxanthones with a B ring. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 17, 2001 Report Share Posted February 17, 2001 Mensaje original----- De: Cassidy Enviado el: sábado 17 de febrero de 2001 8:05 > Be careful here; it isn't the B ring that's oxygen-free, but the xanthones. You should read the sentence as follows: Sorry to disagree but xanthone is a trycyclic molecule that contains 2 oxygen atoms: one endocyclic and other exocyclic; then you can not have " oxygen-free xanthone " , such a compound would be tetrahydroanthracene. I believe that the author is writing about B ring substitution all along. Mi granito de arena. Gerardo Ferrer Sueta --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.230 / Virus Database: 111 - Release Date: 25/01/01 Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 17, 2001 Report Share Posted February 17, 2001 Mensaje original----- De: Cassidy Enviado el: sábado 17 de febrero de 2001 8:05 > Be careful here; it isn't the B ring that's oxygen-free, but the xanthones. You should read the sentence as follows: Sorry to disagree but xanthone is a trycyclic molecule that contains 2 oxygen atoms: one endocyclic and other exocyclic; then you can not have " oxygen-free xanthone " , such a compound would be tetrahydroanthracene. I believe that the author is writing about B ring substitution all along. Mi granito de arena. Gerardo Ferrer Sueta --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.230 / Virus Database: 111 - Release Date: 25/01/01 Quote Link to comment Share on other sites More sharing options...
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