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1
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36349006690
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There is a long-standing dispute, if the two species, formerly named Boletus retipes and B. ornatipes, are autonomous or synonyms for only one quite variable species (see, for example, E. E. Both, The Boletes of North America, Buffalo Museum of Science Buffalo NY, 1996).
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There is a long-standing dispute, if the two species, formerly named Boletus retipes and B. ornatipes, are autonomous or synonyms for only one quite variable species (see, for example, E. E. Both, The Boletes of North America, Buffalo Museum of Science Buffalo NY, 1996).
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2
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0036286812
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Bender and Bresinsky have recently created the genus Retiboletus from molecular biological evidence and the presence of retipolides as chemotaxonomical markers (M. Binder, A. Bresinsky, Feddes Repertorium 2002, 113, 30-40). The authors state that R. retipes and R. ornatipes cannot be differentiated by morphological and anatomical characters. As a consequence, our collections probably contain mixtures of both fungi. A HPLC comparison of several individual collections from the Eastern USA indicates the presence of retipolides in all cases. These investigations together with molecular biologic studies will be reported in a separate publication.
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Bender and Bresinsky have recently created the genus Retiboletus from molecular biological evidence and the presence of retipolides as chemotaxonomical markers (M. Binder, A. Bresinsky, Feddes Repertorium 2002, 113, 30-40). The authors state that R. retipes and R. ornatipes cannot be differentiated by morphological and anatomical characters. As a consequence, our collections probably contain mixtures of both fungi. A HPLC comparison of several individual collections from the Eastern USA indicates the presence of retipolides in all cases. These investigations together with molecular biologic studies will be reported in a separate publication.
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3
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36348933618
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The line broadening is most pronounced for the hemiacetal group and atoms in its surrounding. This can be explained by rapid ring opening and re-closure of the hemiacetal in solution, leading to averaged NMR signals for the two epimers
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The line broadening is most pronounced for the hemiacetal group and atoms in its surrounding. This can be explained by rapid ring opening and re-closure of the hemiacetal in solution, leading to averaged NMR signals for the two epimers.
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6
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0020431956
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a) S. Tamai, M. Kaneda, S. Nakamura, J. Antibiot. 1982, 35, 1130-1136;
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(1982)
J. Antibiot
, vol.35
, pp. 1130-1136
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Tamai, S.1
Kaneda, M.2
Nakamura, S.3
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7
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0020421674
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b) M. Kaneda, S. Tamai, S. Nakamura, T. Hirata, Y. Kushi, T. Suga, J. Antibiot. 1982, 35, 1137-1140.
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(1982)
J. Antibiot
, vol.35
, pp. 1137-1140
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Kaneda, M.1
Tamai, S.2
Nakamura, S.3
Hirata, T.4
Kushi, Y.5
Suga, T.6
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8
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36348974816
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max = 390 and 428 nm increases considerably. After addition of HCl, the solution becomes colorless, and the maxima at 390 and 428 nm disappear completely.
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max = 390 and 428 nm increases considerably. After addition of HCl, the solution becomes colorless, and the maxima at 390 and 428 nm disappear completely.
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9
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19744372206
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and literature cited therein
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S. M. Kroner, M. P. DeMatteo, C. M. Hadad, B. K. Carpenter, J. Am. Chem. Soc. 2005, 127, 7466-7473, and literature cited therein.
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J. Am. Chem. Soc
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Kroner, S.M.1
DeMatteo, M.P.2
Hadad, C.M.3
Carpenter, B.K.4
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10
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36348970817
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For the chemotaxonomic significance of this substance see, Dissertation, Ludwig-Maximilians-Universität, München
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For the chemotaxonomic significance of this substance see V. Hellwig, Dissertation, Ludwig-Maximilians-Universität, München, 1999.
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(1999)
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Hellwig, V.1
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11
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36348951721
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The force-field calculations were carried out with MacroModel 5.5 (Merck Molecular Force Field).
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The force-field calculations were carried out with MacroModel 5.5 (Merck Molecular Force Field).
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13
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0020640267
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a) K. Arai, T. Yoshimura, Y. Itatani, Y. Yamamoto, Chem. Pharm. Bull. 1983, 31, 925-933;
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(1983)
Chem. Pharm. Bull
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Arai, K.1
Yoshimura, T.2
Itatani, Y.3
Yamamoto, Y.4
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14
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0020580209
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b) K. Nitta, N. Fujita, T. Yoshimura, K. Arai, Y. Yamamoto, Chem. Pharm. Bull. 1983, 31, 1528-1533;
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(1983)
Chem. Pharm. Bull
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Nitta, K.1
Fujita, N.2
Yoshimura, T.3
Arai, K.4
Yamamoto, Y.5
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15
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0034015918
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c) K. V. Rao, A. K. Sadhukhan, M. Veerender, V. Ravikumar, E. V. S. Mohan, S. D. Dhanvantri, M. Sitaramkumar, J. Moses Babu, K. Vyas, G. Om Reddy, Chem. Pharm. Bull. 2000, 48, 559-562.
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Chem. Pharm. Bull
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Rao, K.V.1
Sadhukhan, A.K.2
Veerender, M.3
Ravikumar, V.4
Mohan, E.V.S.5
Dhanvantri, S.D.6
Sitaramkumar, M.7
Moses Babu, J.8
Vyas, K.9
Om Reddy, G.10
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16
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3142694085
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and literature cited therein
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M. F. Braña, M. L. García, B. López, B. de Pascual-Teresa, A. Ramos, J. M. Pozuelo, M. T. Domínguez, Org. Biomol. Chem. 2004, 2, 1864-1871, and literature cited therein.
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Org. Biomol. Chem
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Braña, M.F.1
García, M.L.2
López, B.3
de Pascual-Teresa, B.4
Ramos, A.5
Pozuelo, J.M.6
Domínguez, M.T.7
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17
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34249318436
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A. Ingerl, K. Justus, V. Hellwig, W. Steglich, Tetrahedron 2007, 63, 6548-6557.
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Tetrahedron
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Ingerl, A.1
Justus, K.2
Hellwig, V.3
Steglich, W.4
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18
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0348203591
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H. Shibata, T. Fukuda, T. Wada, Y. Morita, T. Hashimoto, Y. Asakawa, Biosci. Biotechnol. Biochem. 1998, 62, 1432-1434.
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Shibata, H.1
Fukuda, T.2
Wada, T.3
Morita, Y.4
Hashimoto, T.5
Asakawa, Y.6
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19
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0345333951
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W. Steglich, W. Furtner, A. Prox, Z. Naturforsch., Teil B 1968, 23, 1044-1050.
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W. Steglich, W. Furtner, A. Prox, Z. Naturforsch., Teil B 1968, 23, 1044-1050.
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21
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33144470605
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For a recent example, see
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For a recent example, see B. Sontag, M. Ruth, P. Spiteller, N. Arnold, W. Steglich, M. Reichert, G. Bringmann, Eur. J. Org. Chem. 2006, 1023-1033.
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Sontag, B.1
Ruth, M.2
Spiteller, P.3
Arnold, N.4
Steglich, W.5
Reichert, M.6
Bringmann, G.7
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0001667321
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a) J. Otera, T. Yano, A. Kawabata, H. Nozaki, Tetrahedron Lett. 1986, 27, 2383-2386;
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Otera, J.1
Yano, T.2
Kawabata, A.3
Nozaki, H.4
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23
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0001339328
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b) J. Otera, S. Ioka, H. Nozaki, J. Org. Chem. 1989, 54, 4013-4014;
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Otera, J.1
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0037702942
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c) B. Jousseaume, C. Laporte, M.-C. Rascle, T. Toupance, Chem. Commun. 2003, 1428-1429.
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Jousseaume, B.1
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Toupance, T.4
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25
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0004150157
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Program for the Solution of Crystal Structures, University of Göttingen
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G. M. Sheldrick, SHELXS-86, Program for the Solution of Crystal Structures, University of Göttingen, 1990.
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(1990)
SHELXS-86
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Sheldrick, G.M.1
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26
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0004150157
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rel. 4.1, Siemens Analytical X-RAY Instruments Inc, Madison, WI
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G. M. Sheldrick, SHELXTL-Plus, rel. 4.1, Siemens Analytical X-RAY Instruments Inc., Madison, WI, 1990.
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SHELXTL-Plus
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Sheldrick, G.M.1
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