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Results: 1-25/31
Authors:
Deiters, A
Wibbeling, B
Hoppe, D
Citation: A. Deiters et al., Enantio- and diastereoselective synthesis of a 3,4-divinylpyrrolidine via asymmetric deprotonation and cyclization of a 9-chloro-5-aza-2,7-nonadiene, ADV SYNTH C, 343(2), 2001, pp. 181-183
Authors:
Schultz-Fademrecht, C
Wibbeling, B
Frohlich, R
Hoppe, D
Citation: C. Schultz-fademrecht et al., Synthesis of enantiomerically enriched allenes by (-)-sparteine-mediated lithiation of alkynyl carbamates, ORG LETT, 3(8), 2001, pp. 1221-1224
Authors:
Bruggemann, M
Holst, C
Hoppe, D
Citation: M. Bruggemann et al., First enantioselective total synthesis of both (+)- and (-)-metachromin A, EUR J ORG C, (4), 2001, pp. 647-654
Authors:
Stratmann, O
Kaiser, B
Frohlich, R
Meyer, O
Hoppe, D
Citation: O. Stratmann et al., The configurational stability of an enantioenriched alpha-thiobenzyllithium derivative and the stereochemical course of its electrophilic substitution reactions; Synthesis of enantiomerically pure, tertiary benzylic thiols, CHEM-EUR J, 7(2), 2001, pp. 423-435
Authors:
Mao, BY
Wu, W
Li, Y
Hoppe, D
Stannek, P
Glinka, A
Niehrs, C
Citation: By. Mao et al., LDL-receptor-related protein 6 is a receptor for Dickkopf proteins, NATURE, 411(6835), 2001, pp. 321-325
Authors:
Laqua, H
Frohlich, R
Wibbeling, B
Hoppe, D
Citation: H. Laqua et al., Synthesis of enantioenriched indene-derived bicyclic alcohols and tricyclic cyclopropanes via (-)-sparteine-mediated lithiation of a racemic precursor and kinetic resolution during the cyclocarbolithiation, J ORGMET CH, 624(1-2), 2001, pp. 96-104
Authors:
Deiters, A
Hoppe, D
Citation: A. Deiters et D. Hoppe, Asymmetric synthesis of cis-1,2-dialkenyl-substituted cyclopentanes via (-)-sparteine-mediated lithiation and cycloalkylation of a 9-chloro-2,7-nonadienyl carbamate, J ORG CHEM, 66(8), 2001, pp. 2842-2849
Authors:
Deiters, A
Muck-Lichtenfeld, C
Frohlich, R
Hoppe, D
Citation: A. Deiters et al., Asymmetric synthesis of a (2Z,7E)-cyclononadiene by an intramolecular cycloalkylation and insight to its conformational properties, ORG LETT, 2(16), 2000, pp. 2415-2418
Authors:
Stratmann, O
Hoppe, D
Frohlich, R
Citation: O. Stratmann et al., Synthesis and structure of highly enantio- and diastereoenriched 1-aza-4-oxa-7-thiabicyclo[3.3.0]octan-8-ones derived from acyl-substituted S-benzyl thiocarbamates, J PRAK CHEM, 342(8), 2000, pp. 828-831
Authors:
Deiters, A
Frohlich, R
Hoppe, D
Citation: A. Deiters et al., Enantioselective synthesis of functionalized 1,5-cyclononadienes by intramolecular cycloalkylation under alpha,alpha '-diallyl coupling, ANGEW CHEM, 39(12), 2000, pp. 2105
Authors:
Heimbach, DK
Frohlich, R
Wibbeling, B
Hoppe, D
Citation: Dk. Heimbach et al., Asymmetric lithiation of an allyl carbamate induced by a complexing remotechiral substituent, SYNLETT, (7), 2000, pp. 950-954
Authors:
Prasad, KRK
Hoppe, D
Citation: Krk. Prasad et D. Hoppe, Applications of homoallylic alcohols derived from (-)-sparteine-mediated asymmetric homoaldolization: Entry to 5-to 8-membered unsaturated oxacycles through metathesis reaction, SYNLETT, (7), 2000, pp. 1067-1069
Authors:
Steif, F
Wibbeling, B
Meyer, O
Hoppe, D
Citation: F. Steif et al., Enantio- and diastereoselective synthesis of (protected) 2-formyl- and 2-(hydroxymethyl)-1-phenylalkane-1,3-diols from chiral 2-methoxy-3-tosyl-1,3-oxazolidines by subsequent asymmetric formylation and aldolization, SYNTHESIS-S, (5), 2000, pp. 743-753
Authors:
Kreier, A
Frohlich, R
Wegelius, E
Hoppe, D
Citation: A. Kreier et al., Asymmetric synthesis of stereodefined 7-(alk-1-enyl)-5,6,7,8-tetrahydronaphthalene-2-carboxylic acids and their precursors, bearing a polar group in the 8-position, by the 3-sulfonyl-1,3-oxazolidine method, SYNTHESIS-S, (10), 2000, pp. 1391-1402
Authors:
Redecker, C
Altrup, U
Hoppe, D
Dusing, R
Speckmann, EJ
Citation: C. Redecker et al., Effects of valproate derivatives I. Antiepileptic efficacy of amides, structural analogs and esters, NEUROPHARM, 39(2), 2000, pp. 254-266
Authors:
Redecker, C
Altrup, U
Hoppe, D
Hense, T
Kreier, A
Rabe, A
Dusing, R
Speckmann, EJ
Citation: C. Redecker et al., Effects of valproate derivatives II. Antiepileptic efficacy in relation tochemical structures of valproate sugar esters, NEUROPHARM, 39(2), 2000, pp. 267-281
Authors:
Marr, F
Frohlich, R
Hoppe, D
Citation: F. Marr et al., A highly enantioenriched, configurationally stable alpha-thioallyllithium compound and the stereochemical course of its electrophilic alkylation, ORG LETT, 1(13), 1999, pp. 2081-2083
Authors:
Derwing, C
Frank, H
Hoppe, D
Citation: C. Derwing et al., Chiral benzyllithium compounds: High configurative stability of (R)- and (S)-1-lithioindan-1-yl N,N-diisopropylcarbamate and unexpected stereochemical course of the substitution reactions, EUR J ORG C, (12), 1999, pp. 3519-3524
Authors:
Deiters, A
Hoppe, D
Citation: A. Deiters et D. Hoppe, Chiral induction by elimination-coupled lithium-ene reaction: Synthesis of(+)-(3R,4R)-1,2-dihydromultifidene, ANGEW CHEM, 38(4), 1999, pp. 546-548
Authors:
van Bebber, J
Ahrens, H
Frohlich, R
Hoppe, D
Citation: J. Van Bebber et al., Efficient desymmetrization of meso-cis-1,2-cyclohexanedimethanol with differentiation between diastereotopic and enantiotopic C-H bonds by (-)-sparteine-mediated deprotonation, CHEM-EUR J, 5(6), 1999, pp. 1905-1916
Authors:
Wurthwein, EU
Behrens, K
Hoppe, D
Citation: Eu. Wurthwein et al., Enantioselective deprotonation of alkyl carbamates by means of (R,R)-1,2-Bis(N,N-dimethylamino)cyclohexane/sec-butyllithium - Theory and experiment, CHEM-EUR J, 5(12), 1999, pp. 3459-3463
Authors:
Heinl, T
Retzow, S
Hoppe, D
Fraenkel, G
Chow, A
Citation: T. Heinl et al., Experimental and theoretical investigations of lithio-indenyl carbamate/(-)-sparteine and (-)-alpha-isosparteine complexes, CHEM-EUR J, 5(12), 1999, pp. 3464-3470
Authors:
Hoppe, D
Citation: D. Hoppe, An acoustic resonance method for the classification of content levels, TEC MES, 66(6), 1999, pp. 244-247
Authors:
Oestreich, M
Hoppe, D
Citation: M. Oestreich et D. Hoppe, Sparteine-mediated stereoselective intramolecuar conjugate addition reactions of dienes and enynes (vol 40, pg 1881, 1999), TETRAHEDR L, 40(16), 1999, pp. 3283-3283
Authors:
Oestreich, M
Hoppe, D
Citation: M. Oestreich et D. Hoppe, (-)-sparteine-mediated stereoselective intramolecular conjugate addition reactions of dienes and enynes, TETRAHEDR L, 40(10), 1999, pp. 1881-1884