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19
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0028294579
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For preliminary communications, see: (a) Kigoshi, H.; Ojika, M.; Suenaga, K.; Mutou, T.; Hirano, J.; Sakakura, A.; Ogawa, T.; Nisiwaki, M.; Yamada, K. Tetrahedron Lett. 1994, 35, 1247-1250. (b) Kigoshi, H.; Ojika, M.; Ishigaki, T.; Suenaga, K.; Mutou, T.; Sakakura, A.; Ogawa, T.; Yamada, K. J. Am. Chem. Soc. 1994, 116, 7443-7444. (c) Suenaga, K.; Ishigaki, T.; Sakakura, A.; Kigoshi, H.; Yamada, K. Tetrahedron Lett. 1995, 36, 5053-5056.
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20
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0028133332
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For preliminary communications, see: (a) Kigoshi, H.; Ojika, M.; Suenaga, K.; Mutou, T.; Hirano, J.; Sakakura, A.; Ogawa, T.; Nisiwaki, M.; Yamada, K. Tetrahedron Lett. 1994, 35, 1247-1250. (b) Kigoshi, H.; Ojika, M.; Ishigaki, T.; Suenaga, K.; Mutou, T.; Sakakura, A.; Ogawa, T.; Yamada, K. J. Am. Chem. Soc. 1994, 116, 7443-7444. (c) Suenaga, K.; Ishigaki, T.; Sakakura, A.; Kigoshi, H.; Yamada, K. Tetrahedron Lett. 1995, 36, 5053-5056.
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21
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0029066587
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For preliminary communications, see: (a) Kigoshi, H.; Ojika, M.; Suenaga, K.; Mutou, T.; Hirano, J.; Sakakura, A.; Ogawa, T.; Nisiwaki, M.; Yamada, K. Tetrahedron Lett. 1994, 35, 1247-1250. (b) Kigoshi, H.; Ojika, M.; Ishigaki, T.; Suenaga, K.; Mutou, T.; Sakakura, A.; Ogawa, T.; Yamada, K. J. Am. Chem. Soc. 1994, 116, 7443-7444. (c) Suenaga, K.; Ishigaki, T.; Sakakura, A.; Kigoshi, H.; Yamada, K. Tetrahedron Lett. 1995, 36, 5053-5056.
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0022871254
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(a) Isolation and structures: Ishibashi, M.; Moore, R. E.; Patterson, G. M. L.; Xu, C.; Clardy, J. J. Org. Chem. 1986, 51, 5300-5306. Carmeli, S.; Moore, R. E.; Patterson, G. M. L. J. Nat. Prod. 1990, 53, 1533-1542. Jung, J. H.; Moore, R. E.; Patterson, G. M. L. Phytochemistry 1991, 30, 3615-3616.
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23
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0025685426
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0142100446
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(a) Isolation and structures: Ishibashi, M.; Moore, R. E.; Patterson, G. M. L.; Xu, C.; Clardy, J. J. Org. Chem. 1986, 51, 5300-5306. Carmeli, S.; Moore, R. E.; Patterson, G. M. L. J. Nat. Prod. 1990, 53, 1533-1542. Jung, J. H.; Moore, R. E.; Patterson, G. M. L. Phytochemistry 1991, 30, 3615-3616.
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0026681740
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(b) Synthetic studies: Paterson, I.; Smith, J. D. J. Org. Chem. 1992, 57, 3261-3264. Paterson, I.; Cumming, J. G. Tetrahedron Lett. 1992, 33, 2847-2850. Paterson, I.; Yeung, K.-S. Tetrahedron Lett. 1993, 34, 5347-5350. Paterson, I.; Smith, J. D. Tetrahedron Lett. 1993, 34, 5351-5354. Paterson, I.; Yeung, K.-S.; Smaill, J. B. Synlett 1993, 774-776. Paterson, I.; Cumming, J. G.; Smith, J. D.; Ward, R. A.; Yeung, K.-S. Tetrahedron Lett. 1994, 35, 3405-3408.
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0026681175
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(b) Synthetic studies: Paterson, I.; Smith, J. D. J. Org. Chem. 1992, 57, 3261-3264. Paterson, I.; Cumming, J. G. Tetrahedron Lett. 1992, 33, 2847-2850. Paterson, I.; Yeung, K.-S. Tetrahedron Lett. 1993, 34, 5347-5350. Paterson, I.; Smith, J. D. Tetrahedron Lett. 1993, 34, 5351-5354. Paterson, I.; Yeung, K.-S.; Smaill, J. B. Synlett 1993, 774-776. Paterson, I.; Cumming, J. G.; Smith, J. D.; Ward, R. A.; Yeung, K.-S. Tetrahedron Lett. 1994, 35, 3405-3408.
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0027179078
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(b) Synthetic studies: Paterson, I.; Smith, J. D. J. Org. Chem. 1992, 57, 3261-3264. Paterson, I.; Cumming, J. G. Tetrahedron Lett. 1992, 33, 2847-2850. Paterson, I.; Yeung, K.-S. Tetrahedron Lett. 1993, 34, 5347-5350. Paterson, I.; Smith, J. D. Tetrahedron Lett. 1993, 34, 5351-5354. Paterson, I.; Yeung, K.-S.; Smaill, J. B. Synlett 1993, 774-776. Paterson, I.; Cumming, J. G.; Smith, J. D.; Ward, R. A.; Yeung, K.-S. Tetrahedron Lett. 1994, 35, 3405-3408.
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0027325990
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(b) Synthetic studies: Paterson, I.; Smith, J. D. J. Org. Chem. 1992, 57, 3261-3264. Paterson, I.; Cumming, J. G. Tetrahedron Lett. 1992, 33, 2847-2850. Paterson, I.; Yeung, K.-S. Tetrahedron Lett. 1993, 34, 5347-5350. Paterson, I.; Smith, J. D. Tetrahedron Lett. 1993, 34, 5351-5354. Paterson, I.; Yeung, K.-S.; Smaill, J. B. Synlett 1993, 774-776. Paterson, I.; Cumming, J. G.; Smith, J. D.; Ward, R. A.; Yeung, K.-S. Tetrahedron Lett. 1994, 35, 3405-3408.
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Paterson, I.1
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29
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0002005554
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(b) Synthetic studies: Paterson, I.; Smith, J. D. J. Org. Chem. 1992, 57, 3261-3264. Paterson, I.; Cumming, J. G. Tetrahedron Lett. 1992, 33, 2847-2850. Paterson, I.; Yeung, K.-S. Tetrahedron Lett. 1993, 34, 5347-5350. Paterson, I.; Smith, J. D. Tetrahedron Lett. 1993, 34, 5351-5354. Paterson, I.; Yeung, K.-S.; Smaill, J. B. Synlett 1993, 774-776. Paterson, I.; Cumming, J. G.; Smith, J. D.; Ward, R. A.; Yeung, K.-S. Tetrahedron Lett. 1994, 35, 3405-3408.
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Paterson, I.1
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30
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0028360086
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(b) Synthetic studies: Paterson, I.; Smith, J. D. J. Org. Chem. 1992, 57, 3261-3264. Paterson, I.; Cumming, J. G. Tetrahedron Lett. 1992, 33, 2847-2850. Paterson, I.; Yeung, K.-S. Tetrahedron Lett. 1993, 34, 5347-5350. Paterson, I.; Smith, J. D. Tetrahedron Lett. 1993, 34, 5351-5354. Paterson, I.; Yeung, K.-S.; Smaill, J. B. Synlett 1993, 774-776. Paterson, I.; Cumming, J. G.; Smith, J. D.; Ward, R. A.; Yeung, K.-S. Tetrahedron Lett. 1994, 35, 3405-3408.
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31
-
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16044371814
-
-
note
-
50 values in the present study were shown to be reproducible, these values will be used hereafter.
-
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32
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16044373957
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note
-
The numbering used in this paper corresponds to that of aplyronine A (1).
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3a was recently reported by Evans and co-workers: Evans, D. A.; Ratz, A. M.; Huff, B. E.; Sheppard, G. S. J. Am. Chem. Soc. 1995, 117, 3448-3467.
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0026774529
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Oikawa, Y.; Yoshioka, T.; Yonemitsu, O. Tetrahedron Lett. 1982, 23, 885-888; 889-892. Aicher, T. D.; Buszek, K. R.; Fang, F. G.; Forsyth, C. J.; Jung, S. H.; Kishi, Y.; Matelich, M. C.; Scola, P. M.; Spero, D. M.; Yoon, S. K. J. Am. Chem. Soc. 1992, 114, 3162-3164.
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(1992)
J. Am. Chem. Soc.
, vol.114
, pp. 3162-3164
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Aicher, T.D.1
Buszek, K.R.2
Fang, F.G.3
Forsyth, C.J.4
Jung, S.H.5
Kishi, Y.6
Matelich, M.C.7
Scola, P.M.8
Spero, D.M.9
Yoon, S.K.10
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67
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16044361998
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note
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1a and the ratio (S/R) of each amino acid in natural 1 varied with the animal samples employed, although compounds with the S configuration were always predominant (6-3/1 and 2-1.1/1 ratios for N,N-dimethylalanine and N,N,O-trimethylserine moieties, respectively). The diastereomeric ratios of the N,N-dimethylalanine part and the N,N,O-trimethylserine part in natural 1, which were used for comparison purposes, were S/R = 72/28 and S/R = 52/48, respectively.
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68
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16044366032
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note
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2b in all respects. (Matrix Presented)
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69
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16044375181
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note
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Natural aplyronine B (2) was obtained as a diastereomeric mixture with respect to two amino acids. The diastereomeric ratios of the N,N-dimethylalanine moiety and the N,N,O-trimethylserine moiety in natural 2, which were used for comparison purposes, were S/R = 4/1 and S/R = 1/1, respectively. The small differences in the signal intensities in the NMR spectra and the differences in the specific rotation which were observed between natural and synthetic aplyronine B (2) are due to the different diastereomeric ratios of two amino acid parts. Natural and synthetic aplyronine B (2) were shown to have identical absolute stereochemistries with regard to the main chain by comparison of their CD spectra: both natural and synthetic aplyronine B (2) showed a negative Cotton effect at 265 nm.
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70
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16044370924
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note
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Natural aplyronine C (3) was obtained as a diastereomeric mixture with respect to N,N-dimethylalanine. The diastereomeric ratio of the N,N-dimethylalanine moiety in natural aplyronine C (3), which has been used for comparison purposes, was S/R = 2/1.
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72
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16044374043
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Manuscript in preparation
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Saito, S.; Watabe, S.; Ozaki, H.; Kigoshi, H.; Yamada, K.; Karaki, H. Manuscript in preparation.
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Saito, S.1
Watabe, S.2
Ozaki, H.3
Kigoshi, H.4
Yamada, K.5
Karaki, H.6
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73
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0000471716
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Hill, J. G.; Rossiter, B. E.; Sharpless, K. B. J. Org. Chem. 1983, 48, 3607-3608.
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(1983)
J. Org. Chem.
, vol.48
, pp. 3607-3608
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Hill, J.G.1
Rossiter, B.E.2
Sharpless, K.B.3
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75
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0001264816
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House, H. O.; Chu, C.-Y.; Wilkins, J. M.; Umen, M. J. J. Org. Chem. 1975, 40, 1460-1469.
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(1975)
J. Org. Chem.
, vol.40
, pp. 1460-1469
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House, H.O.1
Chu, C.-Y.2
Wilkins, J.M.3
Umen, M.J.4
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