A total conformational analysis of diastereomeric esters and calculation of their conformational shielding modelsTamp, Sven; Danilas, Kady; Kreen, Malle; Vares, Lauri; Kiirend, Ene; Vija, Sirje; Pehk, Tõnis; Parve, Omar; Metsala, AndrusJournal of molecular structure : THEOCHEM2008 / 1/3, p. 84-91 : ill https://www.researchgate.net/publication/244272489_A_total_conformational_analysis_of_diastereomeric_esters_and_calculation_of_their_conformational_shielding_models An assessment of alternative low level calculation methods for the initial selection of conformers of diastereomeric estersMetsala, Andrus; Tamp, Sven; Danilas, Kady; Lille, Ülo; Villo, Ly; Vija, Sirje; Pehk, Tõnis; Parve, OmarJournal of theoretical chemistry2014 / p. 1-10 : ill An NMR and MD modeling insight into nucleation of 1,2-alkanediols : selective crystallization of lipase-catalytically resolved enantiomers from the reaction mixturesParve, Omar; Reile, Indrek; Parve, Jaan; Kasvandik, Sergo; Kudrjašova, Marina; Tamp, Sven; Metsala, Andrus; Villo, Ly; Pehk, Tõnis; Jarvet, Jüri; Vares, LauriJournal of organic chemistry2013 / p. 12795-12801 : ill https://doi.org/10.1021/jo402189e Journal metrics at Scopus Article at Scopus Article at WOS Journal metrics at WOS An NMR spectroscopic investigation of functional group selectivity of lipase-catalysed reactions of 11-acetyl prostaglandins E1 and E2Villo, Ly; Tamp, Sven; Vallikivi, Imre; Järving, Ivar; Pehk, Tõnis; Parve, OmarProceedings of the 9th International Symposium on Biocatalysis and Biotransformations - (Biotrans 2009) Held in Bern, Switzerland 5-9 July 20092010 / p. 66 Catalyzed resolution and simultaneous selective crystallizationParve, Jaan; Vares, Lauri; Reile, Indrek; Pehk, Tõnis; Villo, Ly; Parve, OmarComprehensive organic chemistry experiments for the laboratory classroom2017 / p. 931-934 http://www.ester.ee/record=b4666270*est Chemical versus enzymatic acetylation of [alfa]-bromo-[oomega]-hydroxyaldehydes : decyclization of hemiacetals by lipaseVillo, Ly; Metsala, Andrus; Parve, Omar; Pehk, TõnisTetrahedron letters2002 / p. 3203-3207 https://www.academia.edu/17112413/Chemical_versus_enzymatic_acetylation_of_%CE%B1_bromo_%CF%89_hydroxyaldehydes_decyclization_of_hemiacetals_by_lipase A chemoenzymatic stereoselective synthesis of deoxy sugar esters of amino acidsVillo, Ly; Pehk, Tõnis; Parve, OmarProgram and abstracts : BOS 2010 International Conference on Organic Synthesis : Riga, Latvia, June 27-30, 20102010 / p. ? A chemoenzymatic synthesis of a deoxy sugar ester of N-Boc-protected L-tyrosineVillo, Ly; Kreen, Malle; Kudrjašova, Marina; Metsala, Andrus; Tamp, Sven; Lille, Ülo; Pehk, Tõnis; Parve, OmarPractical methods for biocatalysis and biotransformations. 22012 / p. 335-339 https://www.sciencedirect.com/science/article/pii/S1381117710002511 A chemoenzymatic synthesis of deoxy sugar esters involving stereoselective acetylation of hemiacetals catalyzed by CALBVillo, Ly; Kreen, Malle; Metsala, Andrus; Tamp, Sven; Lille, Ülo; Pehk, Tõnis; Parve, Omar; Kudrjašova, MarinaJournal of molecular catalysis B : enzymatic2011 / p. 44-51 https://www.sciencedirect.com/science/article/abs/pii/S1381117710002511 Enzymatic synthesis and polymerization of isosorbide-based monomethacrylates for high-Tg plasticsMatt, Livia; Parve, Jaan; Parve, Omar; Pehk, Tõnis; Liblikas, Ilme; Vares, Lauri; Jannasch, PatricACS sustainable chemistry & engineering2018 / p. 17382-17390 https://doi.org/10.1021/acssuschemeng.8b05074 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Extending traditional area of lipases' application for prostanoid and hemiacetal chemistryParve, Omar; Metsala, Andrus; Tamp, Sven; Villo, LyBIT's 1st Annual World Congress of Catalytic Asymmetric Synthesis : Beijing, China, 19.-21.05.20102010 Hydrolytic and dehydratase enzymes : chapter 9Yu, S.; Parve, Jaan; Parve, Omar; Villo, Ly; Aav, RiinaApplied biocatalysis: The chemist`s enzyme toolbox2020 / p. 333-361 https://www.wiley.com/en-us/9781119487012 Innovatsioon kui teaduslik mõttesportParve, OmarSirp2017 / lk. 22-23 : ill http://www.sirp.ee/s1-artiklid/c21-teadus/innovatsioon-kui-teaduslik-mottesport/ Isosorbide-based polymers as alternatives to conventional plasticsMatt, Livia; Laanesoo, Siim; Bonjour, Olivier; Parve, Jaan; Parve, Omar; Pehk, Tõnis; Pham, Thanh Huong; Liblikas, Ilme; Jannasch, Patric; Vares, LauriAbstract from Baltic Polymer Symposium 2022, Tallinn, Estonia2022 https://taltech.ee/en/BPS2022 Kuidas õpetada Prantsusmaa ajalugu ja rohelist keemiatParve, OmarÕpetajate Leht2017 / lk. 13 https://opleht.ee/2017/06/kuidas-opetada-prantsusmaa-ajalugu-ja-rohelist-keemiat/ Lipase action on some non-triglyceride substratesVallikivi, Imre; Lille, Ülo; Lõokene, Aivar; Metsala, Andrus; Sikk, Peeter; Tõugu, Vello; Vija, Heiki; Villo, Ly; Parve, OmarJournal of molecular catalysis B : enzymatic2003 / 5/6, p. 279-298 : ill https://www.sciencedirect.com/science/article/abs/pii/S1381117703000432 Lipase-catalysed acyl transfer in deoxysugars : a computational studyKaevand, Toomas; Villo, Ly; Metsala, Andrus; Parve, Omar; Lille, ÜloInternational journal of engineering and applied sciences (EAAS)2015 / p. 1-7 : ill Lipase-catalysed reactions of prostaglandinsVallikivi, Imre2004 https://www.ester.ee/record=b1990575*est Lipase-catalyzed stereoresolution of long-chain 1,2-alkanediols: a screening of preferable reaction conditionsParve, Jaan; Reile, Indrek; Aid, Tiina; Kudrjašova, Marina; Müürisepp, Aleksander-Mati; Vallikivi, Imre; Villo, Ly; Aav, Riina; Pehk, Tõnis; Vares, Lauri; Parve, OmarJournal of molecular catalysis B : enzymatic2015 / p. 60-69 : ill https://doi.org/10.1016/j.molcatb.2015.03.006 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS NMR monitoring of lipase-catalyzed reactions of prostaglandins : preliminary estimation of reaction velocitiesVallikivi, Imre; Järving, Ivar; Pehk, Tõnis; Samel, Nigulas; Tõugu, Vello; Parve, OmarJournal of molecular catalysis B : enzymatic2004 / p. 15-19 : ill Nobeli keemiaauhind anti julguse eest murda mõttebarjääreParve, OmarSirp2016 / lk. 36-37 : ill http://www.sirp.ee/s1-artiklid/c21-teadus/nobeli-keemiaauhind-anti-julguse-eest-murda-mottebarjaare/ Novel biobased alternatives to conventional polymersMatt, Livia; Parve, Jaan; Parve, Omar; Pehk, Tõnis; Liblikas, Ilme; Laanesoo, Siim; Bonjour, Olivier; Pham, T.H.; Faisal, M.; Vares, L.; Jannasch, PatricFrontiers in Organic Synthesis : Dedicated to the 70th birthday of Professor Margus Lopp, Tallinn, 15th November 20192019 / p. 7 https://www.ttu.ee/public/k/keemia-ja-biotehnoloogia-instituut/pildid/Booklet.pdf O-alkylation of hydroxycarboxylic acids with (-)-menthyl bromoacetate affords bridged diastereomeric estersVeskilt, Eva; Tamp, Sven; Parve, Jaan; Vares, Lauri; Pehk, Tõnis; Villo, Ly; Parve, OmarBOS 2012 : International Conference on Organic Synthesis : July 1-4, 2012, Tallinn, Estonia : program and abstracts2012 / p. 194 Omar Parve : minu küsimused sõjamuuseumile seoses Rakvere Nõukogude sõjahaua ümbermatmisegaParve, Omar2022 Omar Parve : minu küsimused sõjamuuseumile seoses Rakvere Nõukogude sõjahaua ümbermatmisega Omar Parve: erakondade demokraatlikkuse peaks seadusse kirjutamaParve, Omarerr.ee2025 https://www.err.ee/1609719366/omar-parve-erakondade-demokraatlikkuse-peaks-seadusse-kirjutama Poly(alkanoyl isosorbide methacrylate)s : from amorphous to semicrystalline and liquid crystalline biobased materialsLaanesoo, Siim; Bonjour, Olivier; Parve, Jaan; Matt, Livia; Parve, Omar; Vares, Lauri; Jannasch, PatricEPF European Polymer Congress 26 June – 1 July 2022 : book of abstracts2022 / p. 616 : ill https://webadmin.epf2022.org/Amca-Epf2021/media/content/docs/Book_of_abstrakts_EPF2022.pdf Poly(alkanoyl isosorbide methacrylate)s : from amorphous to semicrystalline and liquid crystalline biobased materialsLaanesoo, Siim; Bonjour, Olivier; Parve, Jaan; Parve, Omar; Matt, Livia; Vares, Lauri; Jannasch, PatricBiomacromolecules2021 / p. 640-648 https://doi.org/10.1021/acs.biomac.0c01474 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Prediction and assignment of coupling constants of diastereomeric cyclopentane derivativesAav, Riina; Pehk, Tõnis; Tamp, Sven; Tamm, Toomas; Kudrjašova, Marina; Parve, Omar; Lopp, MargusProgram and abstracts : BOS 2010 International Conference on Organic Synthesis : Riga, Latvia, June 27-30, 20102010 / p. 47 Quantum chemical evaluation of the yield of hydroxybenzophenones in the Fries rearrangement of hydroxyphenyl benzoatesMetsala, Andrus; Usin, Eve; Vallikivi, Imre; Villo, Ly; Pehk, Tõnis; Parve, OmarJournal of molecular structure : THEOCHEM2004 / p. 215-221 : ill https://www.sciencedirect.com/science/article/pii/S016612800400750X Sapihapete ja prostaglandiinide derivaatide ja konjugaatide süntees ning nende mõju candida rugosa lipaasi aktiivsuseleVeskilt, Eva; Villo, Ly; Kudrjašova, Marina; Parve, OmarXXXII Eesti Keemiapäevad : teaduskonverentsi teesid2011 / lk. 108 : ill Scalable lipase-catalyzed synthesis of (R)-4-(Acyloxy)pentanoic acids from racemic γ-valerolactoneParve, Jaan; Kudrjašova, Marina; Shalima, Tatsiana; Villo, Ly; Liblikas, Ilme; Reile, Indrek; Pehk, Tõnis; Gathergood, Nicholas; Aav, Riina; Vares, Lauri; Parve, OmarACS sustainable chemistry & engineering2021 / p. 1494−1499 https://doi.org/10.1021/acssuschemeng.0c07918 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Short synthesis of novel 9,11-secosterolsJäälaid, Raissa; Järving, Ivar; Pehk, Tõnis; Parve, Omar; Lille, ÜloNatural product letters2001 / 4, p. 221-228 https://www.tandfonline.com/doi/abs/10.1080/10575630108041285 Stereoselective chemoenzymatic synthesis of deoxy sugar esters involving Candida antarctica lipase B = Desoksüsuhkru estrite stereoselektiivne kemoensümaatiline süntees kasutades Candida antarctica lipaasi BVillo, Ly2008 https://www.ester.ee/record=b2393878*est Stereoselective Synthesis of γ-(Acyloxy)Carboxylic Acids and γ-Lactones Features the Switch of Stereopreference of CalB Along Sodium γ-Hydroxycarboxylate HomologuesParve, Jaan; Kudrjašova, Marina; Shalima, Tatsiana; Villo, Ly; Ferschel, Moonika; Niidu, Allan; Liblikas, Ilme; Reile, Indrek; Aav, Riina; Gathergood, Nicholas; Vares, Lauri; Pehk, Tõnis; Parve, OmarEuropean journal of organic chemistry2023 / art. e202201329 https://doi.org/10.1002/ejoc.202201329 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Synthesis and quantitative analysis of diastereomeric linked ester conjugates with remote stereocenters using high field NMR and chiral HPLCDoyle, Eva; Parve, Jaan; Kudrjašova, Marina; Tamp, Sven; Müürisepp, Aleksander-Mati; Villo, Ly; Vares, Lauri; Pehk, Tõnis; Parve, OmarChirality2013 / p. 793-798 : ill https://doi.org/10.1002/chir.22217 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Synthesis of 3,4-dideoxy ribose esters: a novel chemoenzymatic approach to synthesis of activated, extended-chain glycoconjugatesVillo, Ly; Danilas, Kady; Metsala, Andrus; Pehk, Tõnis; Parve, OmarInternational Conference on Organic Synthesis : Tallinn, Estonia, June 25-29, 2006 : program and abstracts2006 / p. 164 Synthesis of deoxy sugar esters : a chemoenzymatic stereoselective approach affording deoxy sugar derivatives also in the form of aldehydeVillo, Ly; Danilas, Kady; Metsala, Andrus; Kreen, Malle; Vallikivi, Imre; Vija, Sirje; Pehk, Tõnis; Luciano, Saso; Parve, OmarJournal of organic chemistry2007 / p. 5813-5816 https://pubs.acs.org/doi/10.1021/jo062640b A synthesis of deoxy sugar esters. Stereoselective acetylation of hemiacetals by CALBVillo, Ly; Metsala, Andrus; Tamp, Sven; Pehk, Tõnis; Parve, OmarBiotrans 2011 : Itaalia, Giardini Naxos, 02.-05.10.20112011 The modelling and kinetic investigation of the lipase-catalysed acetylation of steroisomeric prostaglandinsVallikivi, Imre; Fransson, Linda; Hult, Karl; Järving, Ivar; Pehk, Tõnis; Samel, Nigulas; Tõugu, Vello; Villo, Ly; Parve, OmarJournal of molecular catalysis B : enzymatic2005 / p. 62-69 : ill Theoretical prediction and assignment of vicinal 1H–1H coupling constants of diastereomeric 3-alkoxy-6,7-epoxy-2-oxabicyclo[3.3.0]octanesAav, Riina; Pehk, Tõnis; Tamp, Sven; Tamm, Toomas; Kudrjašova, Marina; Parve, Omar; Lopp, MargusMagnetic resonance in chemistry2011 / p. 76-82 : ill https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/full/10.1002/mrc.2712 Thermomyces lanuginosus lipase with closed lid catalyzes elimination of acetic acid from 11-acetyl-prostaglandin E2Villo, Ly; Metsala, Andrus; Tamp, Sven; Parve, Jaan; Vallikivi, Imre; Järving, Ivar; Nigulas, Samel; Lille, Ülo; Pehk, Tõnis; Parve, OmarChemCatChem2014 / p. 1998-2010 : ill https://doi.org/10.1002/cctc.201400019 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Омар Парве: демократические принципы политических партий должны быть прописаны в законеParve, Omarrus.err.ee2025 https://rus.err.ee/1609721835/omar-parve-demokraticheskie-principy-politicheskih-partij-dolzhny-byt-propisany-v-zakone