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Featured researches published by Bruno Maurer.


Tetrahedron Letters | 1986

(E)-4,8-dimethyl-1,3,7-nonatriene and (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene, two unusual hydrocarbons from cardamom oil

Bruno Maurer; Arnold Hauser; Jean-Claude Froidevaux

The identification of two new natural products, (E)-4,8-dimethyl-1,3,7-nonatriene 1 and (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene 3 is reported. These unusual C11 and C16 hydrocarbons were isolated from the essential oil of Elettaria cardamomum Maton var. miniscula Burkhill (Zingiberaceae) and their structures confirmed by synthesis.


Tetrahedron Letters | 1984

5-Isobutyl-3-methyl-2-furancarbaldehyde, a new monoterpenoid from the essential oil of Tagetes glandulifera Schrank

Bruno Maurer; Arnold Hauser

Abstract The new monoterpenoid 5-isobutyl-3-methyl-2-furancarbaldehyde was isolated from Tagetes glandulifera Schrank and its structure confirmed by synthesis.


Journal of The Chemical Society, Chemical Communications | 1977

(E)-9-isopropyl-6-methyldeca-5,9-dien-2-one, a terpenoid C14-ketone with a novel skeleton

Bruno Maurer; Günther Ohloff

The isolation and synthesis of (E)-9-isopropyl-6-methyldeca-5,9-dien-2-one, a terpenoid C14-ketone with a novel skeleton from costus root oil (Saussurea lappa Clarke) are reported.


European Food Research and Technology | 1987

Über das natürliche Vorkommen gewisser Aromastoffe

Arnold Hauser; Bruno Maurer

ZusammenfassungMehrere in der Aromenindustrie häufig verwendete Ester konnten jetzt erstmals in natürlichen Aromen nachgewiesen werden. Folgende Verbindungen wurden durch GC/MS identifiziert (in Klammern die natürliche Quelle): (E)-Cinnamylformiat (Zimt), (E)-Cinnamylpropionat (Zimt), (E)-Cinnamylisobutyrat (Zimt), (E)-Isobutylcinnamat (Zimt, Styrax), (E)-Isopentylcinnamat (Zimt, Styrax), (E)-2-Methylbutyl-cinnamat (Zimt, Styrax), Isobutylphenyl-acetat (Kakao) und 1-Phenylethyl-isobutyrat (Rum).SummarySeveral esters routinely used by the flavour industry have been detected for the first time in natural flavours. The following compounds were identified by GC/MS (the natural source in parentheses): (E) cinnamyl formate (cinnamon), (E)-cinnamyl propionate (cinnamon), (E)-cinnamyl isobutyrate (cinnamon), isobutyl (E)-cinnamate (cinnamon, styrax), isopentyl (E)-cinnamate (cinnamon, styrax), 2-methylbutyl (E)-cinnamate (cinnamon, styrax), isobutyl phenylacetate (cacao), and 1-phenylethyl isobutyrate (rum).Mehrere in der Aromenindustrie haufig verwendete Ester konnten jetzt erstmals in naturlichen Aromen nachgewiesen werden. Folgende Verbindungen wurden durch GC/MS identifiziert (in Klammern die naturliche Quelle): (E)-Cinnamylformiat (Zimt), (E)-Cinnamylpropionat (Zimt), (E)-Cinnamylisobutyrat (Zimt), (E)-Isobutylcinnamat (Zimt, Styrax), (E)-Isopentylcinnamat (Zimt, Styrax), (E)-2-Methylbutyl-cinnamat (Zimt, Styrax), Isobutylphenyl-acetat (Kakao) und 1-Phenylethyl-isobutyrat (Rum).


Helvetica Chimica Acta | 1983

Structural and Configurational Dependence of the Sensory Process in Steroids

Günther Ohloff; Bruno Maurer; Beat Winter; Wolfgang Giersch


Helvetica Chimica Acta | 1973

Ein einfacher Zugang zu 4-hydroxy-2,5-dimethyl-3(2H)-furanon (furaneol), einem Aromabestandteil von Ananas und Erdbeere

Luciano Dr Re; Bruno Maurer; Günther Ohloff


Helvetica Chimica Acta | 1983

New Sesquiterpenoids from Clary Sage Oil (Salvia sclarea L.)

Bruno Maurer; Arnold Hauser


Helvetica Chimica Acta | 1977

Sesquiterpenoids from Costus Root Oil (Saussurea lappa CLARKE)

Bruno Maurer; Alfred Grieder


Helvetica Chimica Acta | 1979

(cis-6-Methyltetrahydropyran-2-yl)acetic Acid, a Novel Compound from Civet (Viverra civetta)

Bruno Maurer; Alfred Grieder; Walter Thommen


Helvetica Chimica Acta | 1972

Zur Kenntnis der sesquiterpenoiden C12-Ketone des ätherischen Öls von Vetiveria zizanioides (L.) Nash

Bruno Maurer; M. Fracheboud; A. Grieder; Günther Ohloff

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