摘要:

AbstractThe seeds ofStrophanthus gratusnot only contain 4–8% ouabain but also a number of other cardenolide glycosides. The following compounds have been isolated in crystalline form: sarmentoside E, sarmentoside A, acolongifloroside K, and 5 other, probably new compounds: B, δ, η, K and λ1. Three more glycosides have been isolated in the form of their crystalline O‐acetyl‐derivatives: O‐acetyl‐sarmentoloside and two probably new compounds, ϵ1′ and ϵ2′. In addition, the presence of the four following glycosides was demonstrated by paper chromatography and further confirmed by paper chromatography after acetylation: bipindoside, sarmentoside D, tholloside and sarhamnoloside. The structures of the new compounds have not yet

ISSN:0018-019X    

DOI:10.1002/hlca.19650480122

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY

摘要:

AbstractThe importance of the complex formation function for the study of ionic equilibria in solution is discussed.

ISSN:0018-019X    

DOI:10.1002/hlca.19650480123

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY

摘要:

AbstractThe infrared, far infrared and RAMANspectra of cyclododecane and the infrared and far infrared spectra of cyclododecane‐(1,1)‐d2withD2symmetry have been measured. For the light isotopic modification a numerical normal coordinate analysis has been carried out, using the 35‐constants potential for paraffins given by SCHACHTSCHNEIDER, and an automatic computer program for the calculation of theG‐matrix, the normal frequencies and the normal

ISSN:0018-019X    

DOI:10.1002/hlca.19650480124

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY

摘要:

AbstractIt is shown that the glucose residue in betanin is attached at the 5‐hydroxyl group (structure2): Treatment of betanin with diazomethane, acidic hydrolysis and acetylation afforded 5‐O‐acetyl‐6‐O‐methyl‐neobetanidin trimethylester (9), which was cleaved by alkali. The cleavage product was esterified with methanol and oxydized by means of FRÉMYsalt to 5‐hydroxy‐6‐methoxy‐2‐met

ISSN:0018-019X    

DOI:10.1002/hlca.19650480125

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY

摘要:

AbstractA number of mono‐ and of diacylated 3‐aminomethyl‐5‐amino‐2,4,6‐triiodobenzoic acids have been synthesized for evaluation as X‐ray contrast agents. 3‐Acetamidomethyl‐5‐acetamido‐2,4,6‐triiodobenzoic acid seems to be a promisi

ISSN:0018-019X    

DOI:10.1002/hlca.19650480126

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY

摘要:

AbstractIn systematischer Abänderung der Sedridin‐Molekel am heterocyclischen Ring, am Stickstoff, an der Hydroxylgruppe und an einer der Methylgruppen wurden 20 neue Derivate synthetisie

ISSN:0018-019X    

DOI:10.1002/hlca.19650480127

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY

摘要:

AbstractDes rats normaux et phlorizinés ont été traités par dums‐inositol‐[U‐14C] et ‐[2‐14C]; chez le Rat normal, les radioactivités dans le CO2expiré sont sensiblement les mêmes, ce qui implique une combustion complète de l'inositol. Chez le Rat phloriziné, il se produit une exaltation remarquable de la glucogenèse à partir de l'inositol. La radioactivité dans le CO2expiré est alors notablement plus faible après administration d'inositol‐[2‐14C] qu'après celle d'inositol‐[U‐14C]; le rendement radioactif dans le glucose urinaire est par contre plus faible a` partir de l'inositol‐[U‐14C]. Ces faits, ainsi que les répartitions isotopiques observées dans le glucose ur

ISSN:0018-019X    

DOI:10.1002/hlca.19650480128

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY

ISSN:0018-019X    

DOI:10.1002/hlca.19650480101

出版商:WILEY‐VCH Verlag GmbH    

年代:1965

数据来源: WILEY