-
5
-
-
0141742509
-
-
For a recent review of oroidin-derived alkaloids, see: Hoffmann, H.; Lindel, T. Synthesis 2003, 12, 1753.
-
(2003)
Synthesis
, vol.12
, pp. 1753
-
-
Hoffmann, H.1
Lindel, T.2
-
6
-
-
85081435223
-
-
For a lead reference to the use of the Tse group for nitrogen protection including conditions for its removal, see: Dastrup, D. M.; Yap, A. H.; Weinreb, S. M.; Henry, J. R.; Lechleiter, A. J. Tetrahedron 2004, 60, 90.
-
(2004)
Tetrahedron
, vol.60
, pp. 90
-
-
Dastrup, D.M.1
Yap, A.H.2
Weinreb, S.M.3
Henry, J.R.4
Lechleiter, A.J.5
-
7
-
-
0027212254
-
-
(a) Kinnel, R. B.; Gehrken, H.-P.; Scheuer, P. J. J. Am. Chem. Soc. 1993, 115, 3376.
-
(1993)
J. Am. Chem. Soc.
, vol.115
, pp. 3376
-
-
Kinnel, R.B.1
Gehrken, H.-P.2
Scheuer, P.J.3
-
8
-
-
0032524819
-
-
(b) Kinnel, R. B.; Gehrken, H.-P.; Swali, R.; Skoropowski, G.; Scheuer, P. J. J. Org. Chem. 1998, 63, 3281.
-
(1998)
J. Org. Chem.
, vol.63
, pp. 3281
-
-
Kinnel, R.B.1
Gehrken, H.-P.2
Swali, R.3
Skoropowski, G.4
Scheuer, P.J.5
-
9
-
-
0033524887
-
-
(a) Urban, S.; Leone, P. D. A.; Carroll, A. R.; Fechner, G. A.; Smith, J.; Hooper, J. N. A.; Quinn, R. J. J. Org. Chem. 1999, 64, 731.
-
(1999)
J. Org. Chem.
, vol.64
, pp. 731
-
-
Urban, S.1
Leone, P.D.A.2
Carroll, A.R.3
Fechner, G.A.4
Smith, J.5
Hooper, J.N.A.6
Quinn, R.J.7
-
10
-
-
0000292585
-
-
(b) The same name was previously given to a simpler pyrrole alkaloid; see: Bascombe, K. C.; Peter, S. R.; Tinto, W. F.; Bissada, S. M.; McLean, S.; Reynolds, W. F. Heterocycles 1998, 48, 1461.
-
(1998)
Heterocycles
, vol.48
, pp. 1461
-
-
Bascombe, K.C.1
Peter, S.R.2
Tinto, W.F.3
Bissada, S.M.4
McLean, S.5
Reynolds, W.F.6
-
11
-
-
0030802072
-
-
(a) Overman, L. E.; Rogers, B. N.; Tellow, J. E.; Trenkle, W. C. J. Am. Chem. Soc. 1997, 119, 7159.
-
(1997)
J. Am. Chem. Soc.
, vol.119
, pp. 7159
-
-
Overman, L.E.1
Rogers, B.N.2
Tellow, J.E.3
Trenkle, W.C.4
-
12
-
-
18844456480
-
-
(b) Belanger G.; Hong F.-T.; Overman, L. E.; Rogers, B. N.; Tellow, J. E.; Trenkle, W. C. J. Org. Chem. 2002, 67, 7780.
-
(2002)
J. Org. Chem.
, vol.67
, pp. 7780
-
-
Belanger, G.1
Hong, F.-T.2
Overman, L.E.3
Rogers, B.N.4
Tellow, J.E.5
Trenkle, W.C.6
-
14
-
-
0034644391
-
-
Starr, J. T.; Koch, G.; Carreira, E. M. J. Am. Chem. Soc. 2000, 122, 8793.
-
(2000)
J. Am. Chem. Soc.
, vol.122
, pp. 8793
-
-
Starr, J.T.1
Koch, G.2
Carreira, E.M.3
-
15
-
-
0001512880
-
-
(a) Lovely, C. J.; Du, H.; Dias, H. V. R. Org. Lett. 2001, 3, 1319.
-
(2001)
Org. Lett.
, vol.3
, pp. 1319
-
-
Lovely, C.J.1
Du, H.2
Dias, H.V.R.3
-
16
-
-
0037247096
-
-
(b) Lovely, C. J.; Du, H.; Dias, H. V. R Heterocycles 2003, 60, 1.
-
(2003)
Heterocycles
, vol.60
, pp. 1
-
-
Lovely, C.J.1
Du, H.2
Dias, H.V.R.3
-
17
-
-
0142042927
-
-
(c) He, Y.; Chen, Y.; Wu, H.; Lovely, C. J. Org. Lett. 2003, 5, 3623.
-
(2003)
Org. Lett.
, vol.5
, pp. 3623
-
-
He, Y.1
Chen, Y.2
Wu, H.3
Lovely, C.J.4
-
18
-
-
0141518620
-
-
Koenig, S. G.; Miller, S. M.; Leonard, K. A.; Lowe, R. S.; Chen, B. C.; Austin, D. J. Org. Lett. 2003, 5, 2203.
-
(2003)
Org. Lett.
, vol.5
, pp. 2203
-
-
Koenig, S.G.1
Miller, S.M.2
Leonard, K.A.3
Lowe, R.S.4
Chen, B.C.5
Austin, D.J.6
-
19
-
-
85081441567
-
-
note
-
This biosynthetic proposal was suggested by a reviewer of the manuscript by Kinnel and Scheuer (ref 5a).
-
-
-
-
20
-
-
2942673078
-
-
Baran, P. S.; O'Malley, D. P.; Zografos, A. L. Angew. Chem., Int. Ed. 2004, 43, 2674.
-
(2004)
Angew. Chem., Int. Ed.
, vol.43
, pp. 2674
-
-
Baran, P.S.1
O'Malley, D.P.2
Zografos, A.L.3
-
22
-
-
85081440390
-
-
note
-
Difficulties in removing the benzyl group under mild conditions in similar substrates led to the use of the 3,4-dimethoxybenzyl group.
-
-
-
-
23
-
-
85081437091
-
-
See the Supporting Information for details
-
See the Supporting Information for details.
-
-
-
-
24
-
-
85081436012
-
-
see ref 9a
-
Lovely has observed related alkene isomers in similar Diels-Alder reactions employing vinyl imidazoles (see ref 9a).
-
-
-
-
25
-
-
85081437784
-
-
see ref 2a
-
Oxidation of the dibenzylated adduct 14 could be achieved in nearly quantitative yield with dimethyl dioxirane (see ref 2a).
-
-
-
-
26
-
-
0000598410
-
-
( 18) Mello, R.; Fiorentino, M.; Sciacovelli, O.; Curci, R. J. Org. Chem. 1988, 53, 3890.
-
(1988)
Org. Chem.
, vol.53
, pp. 3890
-
-
Mello, R.1
Fiorentino, M.2
Sciacovelli, O.3
Curci, R.J.4
-
27
-
-
85081434462
-
-
note
-
Since this 1,2-shift proceeds through an electron-poor, three-centered, two electron transition state, it appears that elimination processes leading to aromatized product 23 become competitive with the desired 1,2-shift.
-
-
-
-
28
-
-
85081438390
-
-
note
-
To the best of our knowledge, the use of the Tsv group as a protecting group has not been described in the literature.
-
-
-
-
29
-
-
0002877807
-
-
The Tse group has had limited use; a partial reference list includes: (a) Faubl, H. Tetrahedron Lett. 1979, 491.
-
(1979)
Tetrahedron Lett.
, pp. 491
-
-
Faubl, H.1
-
30
-
-
0000852293
-
-
(b) Gonzalez, C.; Greenhouse, R.; Tallabs, R.; Muchowski, J. M. Can J. Chem. 1983, 61, 1697.
-
(1983)
Can J. Chem.
, vol.61
, pp. 1697
-
-
Gonzalez, C.1
Greenhouse, R.2
Tallabs, R.3
Muchowski, J.M.4
-
31
-
-
0028265772
-
-
(c) Rao, A. K. S. B.; Rao, C. G.; Singh, B. B. Synth. Commun. 1994, 24, 341.
-
(1994)
Synth. Commun.
, vol.24
, pp. 341
-
-
Rao, A.K.S.B.1
Rao, C.G.2
Singh, B.B.3
-
32
-
-
0028034612
-
-
(d) DiPietro, D.; Borzilleri, R. M.; Weinreb, S. M. J. Org. Chem. 1994, 59, 5856.
-
(1994)
J. Org. Chem.
, vol.59
, pp. 5856
-
-
DiPietro, D.1
Borzilleri, R.M.2
Weinreb, S.M.3
-
33
-
-
0029614656
-
-
(e) Borzilleri, R. M.; Weinreb, S. M.; Parvez, M. J. Am. Chem. Soc. 1995, 117, 10905.
-
(1995)
Am. Chem. Soc.
, vol.117
, pp. 10905
-
-
Borzilleri, R.M.1
Weinreb, S.M.2
Parvez, M.J.3
-
35
-
-
0036134118
-
-
(g) Bashford, K. E.; Cooper, A. L.; Kane, P. D.; Moody, C. J. Tetrahedron Lett. 2002, 43, 135.
-
(2002)
Tetrahedron Lett.
, vol.43
, pp. 135
-
-
Bashford, K.E.1
Cooper, A.L.2
Kane, P.D.3
Moody, C.J.4
-
36
-
-
0347600589
-
-
and references cited within
-
(h) Dastrup, D. M.; Yap, A. H.; Weinreb, S. M.; Henry, J. R.; Lechleiter, A. J. Tetrahedron 2004, 60, 901 and references cited within.
-
(2004)
Tetrahedron
, vol.60
, pp. 901
-
-
Dastrup, D.M.1
Yap, A.H.2
Weinreb, S.M.3
Henry, J.R.4
Lechleiter, A.J.5
-
38
-
-
0030044234
-
-
(b) Cossu, S.; De Lucchi, O.; Durr, R.; Fabris, F. Synth. Commun. 1996, 26, 211.
-
(1996)
Synth. Commun.
, vol.26
, pp. 211
-
-
Cossu, S.1
De Lucchi, O.2
Durr, R.3
Fabris, F.4
-
39
-
-
85081441194
-
-
see the Supporting Information for details
-
1 protection (see the Supporting Information for details). This diene provided a 2.5:1 ratio of Diels-Alder regioisomers, with the major product being the desired regioisomer.
-
-
-
|