Crystal structure of 2-chloro-2-(chloromethyl)-5-(1-hydroxy-isopropyl)cyclohexane-1-ol, C10H18Cl2O2

C10H18Cl2O2, monoclinic, P12(1)1 (no. 4), a = 7.9492(9) angstrom, b = 7.8317(9) angstrom, c = 9.632(1) angstrom, beta = 98.275(8)degrees, V = 593.4 angstrom(3) Z = 2, R-gt(F) = 0.041, wR(ref)(F-2) = 0.127, T = 293 K.o TEXTO COMPLETO DESTE ARTIGO, ESTARÁ DISPONÍVEL À PARTIR DE AGOSTO DE 2015.221453753

Isolation and synthesis of a new clerodane from Echinodorus grandiflorus

A new clerodane derivative, (-)-16-hydroxycleroda-3,13-dien-16,15-olide-18-oic acid, (4a alpha,6 alpha,8a alpha) 1-carboxy-5(S)-[2(2,5-dihydro-5-hydroxy-2-oxo-4-furanyl)ethyl-5,6,8a-trimethyl-3,4,4a,5,6,7,8,8a-octahydro-naphthalene was isolated as a minor component of the polar fractions of the leaves of E. grandiflorus. The structure was determined by spectroscopy (IR, MS, 1D and 2D H-1 and C-13 NMR). The absolute configuration was determined by a hemisynthesis using (+)-hardwickiic acid methyl ester, from commercial copaiba oil, as starting material. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.50111712

A cembrane from Echinodorus grandiflorus

A new cembrane, echinoic acid ((1E,3E,7E,11E)-8-carboxyl-1-isopropyl-5,18-dimethylcyclotetradecatetraene), is a major secondary metabolite from Echinodorus grandiflorus. Its structure was confirmed by spectral and crystallographic analysis. Copyright (C) 1997 Elsevier Science Ltd.4481547154

Essential oil from two populations of Echinodorus grandiflorus (Cham. & Schltdl.) Micheli (Chapéu de couro)

Analysis by Gas Chromatography and Gas Chromatography/Mass Spectrometry of the essential oils obtained from leaves of Echinodorus grandiflorus ("Chapéu de couro") from two different populations (Big Leaves and Small Leaves), collected monthly between September 1998 and December 1999 revealed 17 components. Phytol was the major constituent for both populations. The main sesquiterpene representatives are (E)-caryophyllene, alpha-humulene and (E)-nerolidol.<br>Análise por cromatografia com fase gasosa e cromatografia com fase gasosa acoplada à espectrometria de massas de óleos essenciais obtidos de folhas de Echinodorus grandiflorus ("Chapéu-de-couro") em duas diferentes populações (folhas grandes e folhas pequenas), coletadas mensalmente entre setembro de 1998 e dezembro de 1999, revelou 17 componentes. Fitol foi o constituinte majoritário em ambas populações. Os principais representantes sesquiterpênicos foram (E)-cariofileno, alfa-humuleno e (E)-nerolidol