Výsledky vyhledávání - "Rumen C. Christov"

STEREOCHEMISTRY OF THE ADDITION OF METALLATED SULFONAMIDES TO SUBSTITUTED CYCLOHEXANONES

Autor: Rumen C. Christov, Anthony Linden, M. Mladenova, Svetlana Simova, Stephan Stanchev

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 104:123-133

The addition of α-metallated sulfonamides to cyclic ketones has been studied. Under kinetic control the axial attack of the lithium and the cerium reagents to 4-tert-butylcyclohexanone is preferred, whereas the stereochemical result is inverse when

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c068674b94d95edc54a5573026c35be
https://doi.org/10.1080/10426509508042584

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Essential Oil Composition of ThreeSideritisSpecies from Bulgaria

Autor: Milka Todorova, Rumen C. Christov, Lyuba N. Evstatieva

Publikováno v: Journal of Essential Oil Research. 12:418-420

The composition of essential oils of three Sideritis species was investigated by GC and GC/MS. It was found that the oil of S. syriaca L. contained a high percentage of myrcene (50.5%), while sesquiterpenes dominated in the oils of S. scardica Griseb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16e777f537f84a89b6b15c48013e92b0
https://doi.org/10.1080/10412905.2000.9699553

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Sterols and volatiles in Cystoseira barbata and Cystoseira crinita from the black sea

Autor: Simeon Popov, Georgi Talev, Stefka Dimitrova-Konaklieva, Tsenka Milkova, Rumen C. Christov

Publikováno v: Phytochemistry. 45:93-95

Five sterols were identified in Cystoseira barbata and seven sterols in C. crinita . Saringasterol appeared to be an artefact. Volatiles in C. barbata consisted mainly of halogenated hydrocarbons, while in C. crinita terpenoids predominate. The resul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b35a746fa0e0692670d109bbf89a8305
https://doi.org/10.1016/s0031-9422(96)00588-2

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Chemotypes ofArtemisia IerchianaWeber. from Bulgaria

Autor: Milka Todorova, Lilyana V. Kuleva, Antonina Vitkova, Rumen C. Christov

Publikováno v: Journal of Essential Oil Research. 9:299-301

The chemical composition of essential oils of 16 samples of Artemisia lerchiana Weber., collected in northeast Bulgaria has been analyzed by GC and GC/MS. The main components were found to be 1,8-cineole (1.8–45.5%), α-thujone (2.5–47.8%), β-th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f3d2c767fcae3b73e1c8bfa1865ad9d
https://doi.org/10.1080/10412905.1997.10554248

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