-
1
-
-
0026045597
-
-
2. a) Nicolaou, K.C.; Dai, W.-M. Angew. Chem., Int. Ed. Engl. , 1991, 30, 1387-1530.
-
(1991)
Angew. Chem., Int. Ed. Engl.
, vol.30
, pp. 1387-1530
-
-
Nicolaou, K.C.1
Dai, W.-M.2
-
2
-
-
0011297163
-
-
Danieli, B. Ed., Società Chimica Italiana, Roma
-
b) Banfi, L. in Seminars in Organic Synthesis, Danieli, B. Ed., Società Chimica Italiana, Roma, 1994.
-
(1994)
Seminars in Organic Synthesis
-
-
Banfi, L.1
-
3
-
-
0030005845
-
-
c) Grissom, J. W.; Gunawardena, G. U.; Klingberg, D.; Huang, D. Tetrahedron , 1996, 52, 6453-6518.
-
(1996)
Tetrahedron
, vol.52
, pp. 6453-6518
-
-
Grissom, J.W.1
Gunawardena, G.U.2
Klingberg, D.3
Huang, D.4
-
5
-
-
0027319406
-
-
b) Nicolaou, K. C.; Smith, A. L.; Yue, E. W., Proc. Natl. Acad. Sci. USA, 1993, 90, 5881-5888.
-
(1993)
Proc. Natl. Acad. Sci. USA
, vol.90
, pp. 5881-5888
-
-
Nicolaou, K.C.1
Smith, A.L.2
Yue, E.W.3
-
7
-
-
0023689095
-
-
4. a) Nicolaou, K. C.; Zuccarello, G.; Ogawa, Y.; Schweiger, E. J.; Kumazawa, T., J. Am. Chem. Soc., 1988, 110, 4866-4868.
-
(1988)
J. Am. Chem. Soc.
, vol.110
, pp. 4866-4868
-
-
Nicolaou, K.C.1
Zuccarello, G.2
Ogawa, Y.3
Schweiger, E.J.4
Kumazawa, T.5
-
8
-
-
0026662154
-
-
b) Nicolaou, K. C.; Zuccarello, G.; Riemer, C.; Estevez, V. A.; Dai, W.-M. J. Am. Chem. Soc., 1992, 114, 7360-7371.
-
(1992)
J. Am. Chem. Soc.
, vol.114
, pp. 7360-7371
-
-
Nicolaou, K.C.1
Zuccarello, G.2
Riemer, C.3
Estevez, V.A.4
Dai, W.-M.5
-
11
-
-
0023766961
-
-
e) Nicolaou, K. C.; Ogawa, Y.; Zuccarello, G.; Kataoka, H. J. Am. Chem. Soc., 1988, 110, 7247-7248.
-
(1988)
J. Am. Chem. Soc.
, vol.110
, pp. 7247-7248
-
-
Nicolaou, K.C.1
Ogawa, Y.2
Zuccarello, G.3
Kataoka, H.4
-
12
-
-
0026713360
-
-
f) Nicolaou, K. C.; Sorensen, E. J.; Discordia, R.; Hwang, C.-K.; Minto, R. E.; Bharucha, K. N.; Bergman, R. G. Angew. Chem., Int. Ed. Engl., 1992, 31, 1044-1046.
-
(1992)
Angew. Chem., Int. Ed. Engl.
, vol.31
, pp. 1044-1046
-
-
Nicolaou, K.C.1
Sorensen, E.J.2
Discordia, R.3
Hwang, C.-K.4
Minto, R.E.5
Bharucha, K.N.6
Bergman, R.G.7
-
14
-
-
0026710825
-
-
h) Semmelhack, M. F.; Neu, T.; Foubelo, F. Tetrahedron Lett., 1992, 33, 3277-3280.
-
(1992)
Tetrahedron Lett.
, vol.33
, pp. 3277-3280
-
-
Semmelhack, M.F.1
Neu, T.2
Foubelo, F.3
-
17
-
-
0000068815
-
-
k) Grissom, J. W.; Calkins, T. L.; McMillen, H. A.: Jiang, Y. J. Org. Chem., 1994, 59, 5833-5835.
-
(1994)
J. Org. Chem.
, vol.59
, pp. 5833-5835
-
-
Grissom, J.W.1
Calkins, T.L.2
McMillen, H.A.3
Jiang, Y.4
-
18
-
-
37049086512
-
-
l) Jones, G. B.; Huber, R. S.; Mathews, J. E. J. Chem. Soc., Chem. Commun., 1995, 1791-1792.
-
(1995)
J. Chem. Soc., Chem. Commun.
, pp. 1791-1792
-
-
Jones, G.B.1
Huber, R.S.2
Mathews, J.E.3
-
19
-
-
33748242372
-
-
5. Part of this work was preliminarly reported: Banfi, L.; Guanti, G. Angew. Chem., Int. Ed. Engl., 1995, 34, 2393-2395.
-
(1995)
Angew. Chem., Int. Ed. Engl.
, vol.34
, pp. 2393-2395
-
-
Banfi, L.1
Guanti, G.2
-
20
-
-
0011330849
-
-
note
-
8 independently prepared some members of a second family of lactendiynes, represented by the general formula 2.
-
-
-
-
22
-
-
0002287932
-
-
8. Basak, A.; Khamrai, U. K.; Mallik, J. Chem. Soc., Chem. Commun., 1996, 749-750.
-
(1996)
J. Chem. Soc., Chem. Commun.
, pp. 749-750
-
-
Basak, A.1
Khamrai, U.K.2
Mallik3
-
23
-
-
0011343634
-
-
note
-
1/2 is known (ref. 4b)]. Our results showed for cycloaromatization of compounds 1 a ΔSE about 17 Kcal/mol higher than the one calculated for the model reaction.
-
-
-
-
24
-
-
0019168718
-
-
10. a) Salzmann, T. N.; Ratcliffe, R. W.; Christensen, B. G.; Bouffard, F. A. J. Am. Chem. Soc., 1980, 102, 6161-6163.
-
(1980)
J. Am. Chem. Soc.
, vol.102
, pp. 6161-6163
-
-
Salzmann, T.N.1
Ratcliffe, R.W.2
Christensen, B.G.3
Bouffard, F.A.4
-
26
-
-
0022647239
-
-
c) Nishida, A.; Shibasaki, M.; Ikegami, S. Chem. Pharm. Bull., 1986, 34, 1434-1446.
-
(1986)
Chem. Pharm. Bull.
, vol.34
, pp. 1434-1446
-
-
Nishida, A.1
Shibasaki, M.2
Ikegami, S.3
-
27
-
-
37049091077
-
-
d) Bateson, J. H.; Quinn, A. M.; Smale, T. C.; Southgate, R. J. Chem. Soc., Perkin Trans 1, 1985, 2219-2234.
-
(1985)
J. Chem. Soc., Perkin Trans
, vol.1
, pp. 2219-2234
-
-
Bateson, J.H.1
Quinn, A.M.2
Smale, T.C.3
Southgate, R.4
-
28
-
-
0022537553
-
-
11. a) Takahashi, Y.; Yamashita, H.; Kobayashi, S.; Ohno, M. Chem. Pharm. Bull., 1986, 34, 2732-2742.
-
(1986)
Chem. Pharm. Bull.
, vol.34
, pp. 2732-2742
-
-
Takahashi, Y.1
Yamashita, H.2
Kobayashi, S.3
Ohno, M.4
-
29
-
-
0022543586
-
-
b) Takahashi, Y.; Yamashita, H.; Izawa, T.; Kobayashi, S.; Ohno, M. Chem. Pharm. Bull., 1986, 34, 3020-3024.
-
(1986)
Chem. Pharm. Bull.
, vol.34
, pp. 3020-3024
-
-
Takahashi, Y.1
Yamashita, H.2
Izawa, T.3
Kobayashi, S.4
Ohno, M.5
-
33
-
-
9644285669
-
-
b) Sonogashira, K.; Tohda, Y.; Hagihara, N. Tetrahedron Lett., 1975, 50, 4467-4470.
-
(1975)
Tetrahedron Lett.
, vol.50
, pp. 4467-4470
-
-
Sonogashira, K.1
Tohda, Y.2
Hagihara, N.3
-
36
-
-
0028276499
-
-
b) Alami, M.; Crousse, B.; Linstrumelle, G. Tetrahedron Lett., 1994, 55, 3543-3544.
-
(1994)
Tetrahedron Lett.
, vol.55
, pp. 3543-3544
-
-
Alami, M.1
Crousse, B.2
Linstrumelle, G.3
-
37
-
-
0028125796
-
-
17. a) Kadow, J. F.; Cook, D. J.; Doyle, T. W.; Langley, D. R.; Pham, K. M.; Vyas, D. M.; Wittman, M. D. W.Tetrahedron , 1994, 50, 1519-1538.
-
(1994)
Tetrahedron
, vol.50
, pp. 1519-1538
-
-
Kadow, J.F.1
Cook, D.J.2
Doyle, T.W.3
Langley, D.R.4
Pham, K.M.5
Vyas, D.M.6
Wittman, M.D.W.7
-
39
-
-
0011291732
-
-
note
-
18. Alcohol 14 was unstable in the dry state, forming unsoluble solid materials. On the contrary, both 13 and 15 were stable at -20°C for several weeks.
-
-
-
-
40
-
-
0000959935
-
-
19. a) Takai, K.; Kuroda, T.; Nakatsukasa, S.; Ohima, K.; Nozaki, H., J. Am. Chem. Soc., 1986, 108, 6048-6050.
-
(1986)
J. Am. Chem. Soc.
, vol.108
, pp. 6048-6050
-
-
Takai, K.1
Kuroda, T.2
Nakatsukasa, S.3
Ohima, K.4
Nozaki, H.5
-
42
-
-
0027050497
-
-
c) Nicolaou, K. C.; Liu, A.; Zeng, Z.; McComb, S. J. Am. Chem. Soc., 1992, 114, 9279-9282.
-
(1992)
J. Am. Chem. Soc.
, vol.114
, pp. 9279-9282
-
-
Nicolaou, K.C.1
Liu, A.2
Zeng, Z.3
McComb, S.4
-
43
-
-
0011330573
-
-
ref. 4c
-
d) ref. 4c.
-
-
-
-
44
-
-
84989539773
-
-
20. Nishikawa, T.; Shibuya, S.; Hosokawa, S.; Isobe, M. Synlett , 1994, 485-486.
-
(1994)
Synlett
, pp. 485-486
-
-
Nishikawa, T.1
Shibuya, S.2
Hosokawa, S.3
Isobe, M.4
-
45
-
-
0011336486
-
-
note
-
21. Although the yield of the direct conversion of 12 into 13 (Scheme 2) was in several instances good, in other cases, for reasons not yet understood, the reaction stopped at low conversion and the recovery of both product and substrate was low. For this reason, we later preferred, in the synthesis of unprotected derivatives (see Schemes 4,6), a two step sequence, involving desilylation followed by reacton with the complex iodine-morpholine.
-
-
-
-
46
-
-
0011343637
-
-
note
-
1/2 of few minutes at 50°C was predicted.
-
-
-
-
48
-
-
0011299935
-
-
note
-
24. A similar behaviour was experienced by Ohno on a PMB protected azetidinone: se ref. 11a.
-
-
-
-
49
-
-
0027320050
-
-
25. Banfi, L.; Guanti, G.; Narisano, E. Tetrahedron , 1993, 49, 7385-7392.
-
(1993)
Tetrahedron
, vol.49
, pp. 7385-7392
-
-
Banfi, L.1
Guanti, G.2
Narisano, E.3
-
50
-
-
0025158558
-
-
26. a) Baldwin, J. E.; Adlington, R. M.; Golins, D. W.; Schofield, C. J. Tetrahedron , 1990, 46, 4733-4748.
-
(1990)
Tetrahedron
, vol.46
, pp. 4733-4748
-
-
Baldwin, J.E.1
Adlington, R.M.2
Golins, D.W.3
Schofield, C.J.4
-
51
-
-
0028960440
-
-
b) Baldwin, J. E.; Adlington, R. M.; Gollins, D. W.; Godfrey, C. R. A. Tetrahedron , 1995, 57, 5169-5180.
-
(1995)
Tetrahedron
, vol.57
, pp. 5169-5180
-
-
Baldwin, J.E.1
Adlington, R.M.2
Gollins, D.W.3
Godfrey, C.R.A.4
-
52
-
-
0011336487
-
-
note
-
27. The last step for the synthesis of 7 required expensive 2,2'-dipyridyl disulfide as coupling agent. Attempts to replace it with other cheaper coupling reagents were unsuccessful. Moreover, separation of 7 from 2-pyridylthiol was not trivial requiring careful silica gel chromatography.
-
-
-
-
54
-
-
0019168718
-
-
29. Salzmann, T. N.; Ratcliffe, R. W.; Christensen, B. G.; Bouffard, F. A. J. Am. Chem. Soc., 1980, 102, 6163-6165.
-
(1980)
J. Am. Chem. Soc.
, vol.102
, pp. 6163-6165
-
-
Salzmann, T.N.1
Ratcliffe, R.W.2
Christensen, B.G.3
Bouffard, F.A.4
-
55
-
-
0017410318
-
-
30. Huffman, W. F.; Holden, K. G.; Buckley, T. F.; Gleason, J. G.; Wu, L. J. Am. Chem. Soc., 1977, 99, 2352-2353.
-
(1977)
J. Am. Chem. Soc.
, vol.99
, pp. 2352-2353
-
-
Huffman, W.F.1
Holden, K.G.2
Buckley, T.F.3
Gleason, J.G.4
Wu, L.5
-
56
-
-
0011330574
-
-
note
-
31. It is worth noting that, while 14 (note 18) tended to polymerize in the dry state, 46 proved to be more stable and was recovered intact after several days in freezer.
-
-
-
-
57
-
-
0011373053
-
-
note
-
3OD alone, the peaks were badly resolved.
-
-
-
-
58
-
-
0011343638
-
-
note
-
33. These compounds failed to elute in GC at temperatures up to 280°C, because of their too low volatility. or of their low thermal stability.
-
-
-
|