Synthesis of 1, 2-0-trichloroethylidene and-L-arabino_pentadialdosu and it's reactions with some witting reagents
Küçük Resim Yok
Tarih
1995
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ege Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
ABSTRACT Bu tezde, 1,2-0-trikloroetiliden-a-L-arabino pentadialdoz [Bileşik:I]'dan çıkılarak çeşitli Wittig reaktifleriyle, doymamış şeker türevleri sentezlendi. Pentadialdoz türevi (I), (S)-l,2-0-trikloroetiliden-a-D-galaktofuranoz (Galaktokloraloz)'dan periyodat oksidasyonuyla elde edildi. Böylece, (S) -metil- trans- 5, 6-didehidro-5, 6- dideoksi-l,2-0-trikloroetiliden-a-D-galaktofurano-hepturonat [BileşikrII], (S)-etil- trans-5,6-didehiciro-53-dideoksi-l,2-0-trlIdoroetÜlden-a-I>galaktofurano-hepturonat [BileşilcIIIl, (S)-8-deoksi-7-keto-trans-5,6-didehidro-5,6-dideoksi-1.2-0-trikloroetili- den-a-D-galaktofurano-oktoz [BileşikrIV] elde edildi ve spektroskopik yöntemlerle yapıları aydınlatıldı
ABSTRACT In this thesis, unsaturated sugar derivatives from 1.2-O-trichloro- ethylidene-oc-L-arabino pentadialdose [Compound:I] were synthesised by the use of Wittig reagents. The pentadialdose derivative (I) were made by the glycol fission reaction, from (S)-l,2-0-trichloroethylidene-a-D-galactofuranose (Galacto- chloralose). Thus, (S)-methyl-trans-5,6-didehydro-5,6-dideoxy- 1,2-O-trichloroethyli- dene-a-D-galactofurano-hepturonate [Compound:II], (S) -ethyl- trans- 5,6- didehy dro- 5,6-dideoxy-l,2-0-trichloroethylide-a-D-galactofurano-hepturonate [Compound:III], (S)-8-deoxy-7-keto- ûrans-5,6-didehydro-5,6-dideoxy- 1,2-O-trichloroethylidene-a-ö-ga- lactofurano-octose [Compound:IV] were obtained and their structures were identified by spectroscopic methods.
ABSTRACT In this thesis, unsaturated sugar derivatives from 1.2-O-trichloro- ethylidene-oc-L-arabino pentadialdose [Compound:I] were synthesised by the use of Wittig reagents. The pentadialdose derivative (I) were made by the glycol fission reaction, from (S)-l,2-0-trichloroethylidene-a-D-galactofuranose (Galacto- chloralose). Thus, (S)-methyl-trans-5,6-didehydro-5,6-dideoxy- 1,2-O-trichloroethyli- dene-a-D-galactofurano-hepturonate [Compound:II], (S) -ethyl- trans- 5,6- didehy dro- 5,6-dideoxy-l,2-0-trichloroethylide-a-D-galactofurano-hepturonate [Compound:III], (S)-8-deoxy-7-keto- ûrans-5,6-didehydro-5,6-dideoxy- 1,2-O-trichloroethylidene-a-ö-ga- lactofurano-octose [Compound:IV] were obtained and their structures were identified by spectroscopic methods.
Açıklama
Bu tezin, veri tabanı üzerinden yayınlanma izni bulunmamaktadır. Yayınlanma izni olmayan tezlerin basılı kopyalarına Üniversite kütüphaneniz aracılığıyla (TÜBESS üzerinden) erişebilirsiniz.
Anahtar Kelimeler
Kimya, Chemistry, Doymamış şeker, Unsaturated sugar, Galaktokloraloz, Galactochloralose, Oksitlenme, Oxidation
