-
1
-
-
0025067472
-
-
Atsumi, S.; Umezawa, K.; Iinuma, H.; Naganawa, H.; Nakamura, H.; Iitaka, Y.; Takeuchi, T. J. Antibiot. 1990, 43, 49-53.
-
(1990)
J. Antibiot.
, vol.43
, pp. 49-53
-
-
Atsumi, S.1
Umezawa, K.2
Iinuma, H.3
Naganawa, H.4
Nakamura, H.5
Iitaka, Y.6
Takeuchi, T.7
-
2
-
-
0025684595
-
-
Atsumi, S.; Iinuma, H.; Nosaka, C.; Umezawa, K. J. Antibiot. 1990, 43, 1579-1585.
-
(1990)
J. Antibiot.
, vol.43
, pp. 1579-1585
-
-
Atsumi, S.1
Iinuma, H.2
Nosaka, C.3
Umezawa, K.4
-
3
-
-
0025021242
-
-
For the first total synthesis of 1, see: (a) Tatsuta, K.; Niwata, Y.; Umezawa, K.; Toshima, K.; Nakata, M. Tetrahedron Lett. 1990, 31, 1171-1172, (b) Tatsuta, K.; Niwata, Y.; Umezawa, K.; Toshima, K.; Nakata, M. Carbohydr. Res. 1991, 222, 189-203.
-
(1990)
Tetrahedron Lett.
, vol.31
, pp. 1171-1172
-
-
Tatsuta, K.1
Niwata, Y.2
Umezawa, K.3
Toshima, K.4
Nakata, M.5
-
4
-
-
0026332029
-
-
For the first total synthesis of 1, see: (a) Tatsuta, K.; Niwata, Y.; Umezawa, K.; Toshima, K.; Nakata, M. Tetrahedron Lett. 1990, 31, 1171-1172, (b) Tatsuta, K.; Niwata, Y.; Umezawa, K.; Toshima, K.; Nakata, M. Carbohydr. Res. 1991, 222, 189-203.
-
(1991)
Carbohydr. Res.
, vol.222
, pp. 189-203
-
-
Tatsuta, K.1
Niwata, Y.2
Umezawa, K.3
Toshima, K.4
Nakata, M.5
-
5
-
-
85037472405
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1991)
Synlett
, pp. 831-832
-
-
Akiyama, T.1
Ohnari, M.2
Shima, H.3
Ozaki, S.4
-
6
-
-
37049074505
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1994)
J. Chem. Soc., Perkin Trans. 1
, pp. 2017-2025
-
-
Shing, T.K.M.1
Tai, V.W.-F.2
-
7
-
-
0028018510
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1994)
J. Org. Chem.
, vol.59
, pp. 3250-3252
-
-
McDevitt, R.E.1
Fraser-Reid, B.2
-
8
-
-
0002314197
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1994)
Chem. Lett.
, pp. 37-40
-
-
Sato, K.1
Bokura, M.2
Moriyama, H.3
Igarashi, T.4
-
9
-
-
0029065673
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1995)
J. Org. Chem.
, vol.60
, pp. 3280-3281
-
-
Jung, M.E.1
Choe, S.W.T.2
-
10
-
-
0028849344
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1995)
J. Org. Chem.
, vol.60
, pp. 16-17
-
-
Schlessinger, R.H.1
Bergstrom, C.P.2
-
11
-
-
0030822487
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1997)
Synthesis
, pp. 925-930
-
-
Letellier, P.1
Ralainairina, R.2
Beaupère, D.3
Uzan, R.4
-
12
-
-
0032541712
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1998)
Tetahedron Lett.
, vol.39
, pp. 6939-6942
-
-
Takahashi, H.1
Iimori, T.2
Ikegami, S.3
-
13
-
-
0000599315
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1998)
J. Org. Chem.
, vol.63
, pp. 426-427
-
-
Ziegler, F.E.1
Wang, Y.2
-
14
-
-
0000753395
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(1998)
J. Org. Chem.
, vol.63
, pp. 7920-7930
-
-
-
15
-
-
0035801528
-
-
For the enantioselective total synthesis of 1, see: (a) Akiyama, T.; Ohnari, M.; Shima, H.; Ozaki, S. Synlett 1991, 831-832. (b) Shing, T. K. M.; Tai, V. W.-F. J. Chem. Soc., Perkin Trans. 1 1994, 2017-2025. (c) McDevitt, R. E.; Fraser-Reid, B. J. Org. Chem. 1994, 59, 3250-3252. (d) Sato, K.; Bokura, M. ; Moriyama, H.; Igarashi, T. Chem. Lett. 1994, 37-40. (e) Jung, M. E.; Choe, S. W. T. J. Org. Chem. 1995, 60, 3280-3281. (f) Schlessinger, R. H.; Bergstrom, C. P. J. Org. Chem. 1995, 60, 16-17. (g) Letellier, P.; Ralainairina, R.; Beaupère, D.; Uzan, R. Synthesis 1997, 925-930. (h) Takahashi, H.; Iimori, T.; Ikegami, S. Tetahedron Lett. 1998, 39, 6939-6942. (i) Ziegler, F. E.; Wang, Y. J. Org. Chem. 1998, 63, 426-427; see also J. Org. Chem. 1998, 63, 7920-7930. (j) Trost, B. M.; Patterson, D. E.; Hembre, E. J. Chem. Eur. J. 2001, 7, 3768-3775.
-
(2001)
Chem. Eur. J.
, vol.7
, pp. 3768-3775
-
-
Trost, B.M.1
Patterson, D.E.2
Hembre, E.J.3
-
17
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-
37049106315
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-
In general, the Ferrier(II) cyclization has been used as a representative means for converting sugars to cyclitol derivatives; see: (a) Ferrier, R. J. J. Chem. Soc., Perkin Trans. 1 1979, 1455-1458; see also Chem. Rev. 1993, 93, 2779-2831.
-
(1979)
J. Chem. Soc., Perkin Trans. 1
, pp. 1455-1458
-
-
Ferrier, R.J.1
-
18
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12044258371
-
-
In general, the Ferrier(II) cyclization has been used as a representative means for converting sugars to cyclitol derivatives; see: (a) Ferrier, R. J. J. Chem. Soc., Perkin Trans. 1 1979, 1455-1458; see also Chem. Rev. 1993, 93, 2779-2831. This reaction can provide a convenient way for converting 6-carbon sugars to 2,3,4,5-(tetrahydoxy)cyclohexanone derivatives. therefore, if additional substituents are required, they have to be introduced after the cyclization. Since this methods features oxy-mercuration as a key step, a more environmentally benign process using promoters other than mercury should be desirable, and some acceptable alternatives become available such as palladium(II)-catalyzed processes.
-
(1993)
Chem. Rev.
, vol.93
, pp. 2779-2831
-
-
-
19
-
-
0000589780
-
-
and ref 4h
-
For these works, see: (b) Adam, S. Tetrahedron Lett. 1988, 29, 6589-6592 and ref 4h. A promising strategy capable of introducing a hydroxymethyl substituent concomitantly on converting a sugar to a cyclitol derivative was developed in Tatsuta's total synthesis of 1 (ref 3). In this case intramolecular nitrile oxide cycloaddition reaction played an important role for a series of transformations from expensive L-glucose to the desired cyclitol derivative.
-
(1988)
Tetrahedron Lett.
, vol.29
, pp. 6589-6592
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Adam, S.1
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20
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0003527998
-
-
Wiley-VCH: New York
-
For generation and intramolecular [3 + 2] cycloaddition reaction of silyl nitronate under the similar conditions, see the preceding paper in this issue. For a review for nitronate cycloadditions including silyl nitronates, see: Ono, N. The Nitro Group in Organic Synthesis; Wiley-VCH: New York, 2001; pp 267-274.
-
(2001)
The Nitro Group in Organic Synthesis
, pp. 267-274
-
-
Ono, N.1
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21
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0000698698
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Bernet, von B.; Vasella, A. Helv. Chim. Acta 1979, 62, 1990-2015. A modified procedure for the synthesis of 2 is described in Supporting Information.
-
(1979)
Helv. Chim. Acta
, vol.62
, pp. 1990-2015
-
-
Von Bernet, B.1
Vasella, A.2
-
22
-
-
0000620660
-
-
Saito, S.; Kuroda, A.; Tanaka, K.; Kimura, R. Synlett 1996, 231-233.
-
(1996)
Synlett
, pp. 231-233
-
-
Saito, S.1
Kuroda, A.2
Tanaka, K.3
Kimura, R.4
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23
-
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0030907429
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-
Simoni, D.; Invidiata, F. P.; Manfredini, S.; Ferroni, R.; Lampronti, I. ; Roberti, M.; Pollini, G. P. Tetrahedron Lett. 1997, 38, 2749-2752.
-
(1997)
Tetrahedron Lett.
, vol.38
, pp. 2749-2752
-
-
Simoni, D.1
Invidiata, F.P.2
Manfredini, S.3
Ferroni, R.4
Lampronti, I.5
Roberti, M.6
Pollini, G.P.7
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24
-
-
0021963194
-
-
For related diastereoselective Henry reaction, see: Hanessian, S.; Kloss, J. Tetrahedron Lett. 1985, 26, 1261-1264. Other bases such as DBU or KF resulted in lower yield with diastereoselectivity lower than that of the TMG-catalyzed case.
-
(1985)
Tetrahedron Lett.
, vol.26
, pp. 1261-1264
-
-
Hanessian, S.1
Kloss, J.2
-
25
-
-
0242427027
-
-
note
-
No cycloaddition reaction proceeded at all when recovered 6b was subjected to the same reaction conditions as those for cycloaddition (footnote e in Scheme 2): 6b was recovered unchanged again in 66%, and the rest of 6b (34%) seemed to decompose or lead to a mixture of unidentifiable products.
-
-
-
-
26
-
-
84985092616
-
-
Two possible mechanisms deserve consideration for such a geometrical isomerization of nitronates: one might involve a protonation-deprotonation process and the other might involve the 1,3-migration of a trimethylsilyl group from oxygen to oxygen. For discussion with respect to the 1,3-migration, see: Colvin, E. W.; Beck, A. K.; Bastani, B.; Seebach, D.; Dunitz, J. D. Helv. Chim. Acta 1980, 63, 697-710.
-
(1980)
Helv. Chim. Acta
, vol.63
, pp. 697-710
-
-
Colvin, E.W.1
Beck, A.K.2
Bastani, B.3
Seebach, D.4
Dunitz, J.D.5
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27
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0001416457
-
-
Nitta, M.; Yi, A.; Kobayashi, T. Bull. Chem. Soc. Jpn. 1985, 58, 991-994.
-
(1985)
Bull. Chem. Soc. Jpn.
, vol.58
, pp. 991-994
-
-
Nitta, M.1
Yi, A.2
Kobayashi, T.3
-
28
-
-
0242427029
-
-
note
-
4/CeCl/THF gave less selective results: yields of 12a and 12b were 16% and 13%, 22% and 11%, 49% and 20%, 44% and 15%, or 20% and 33%, respectively.
-
-
-
-
29
-
-
0000146469
-
-
For a review for cleavage of cyclic ortho esters, see: Org. React. 1984, 30, 457-566.
-
(1984)
Org. React.
, vol.30
, pp. 457-566
-
-
-
30
-
-
0242595153
-
-
note
-
All the products gave satisfactory spectroscopic data (NMR, IR, and MS). See Supporting Information.
-
-
-
-
31
-
-
0242427028
-
-
note
-
6-mediated deoxygenation reactions of this class is under investigation.
-
-
-
-
32
-
-
0242595154
-
-
note
-
( 19) Overall yield of 1 from 9 was 31% corresponding to the sum of two routes via 12a (19%) and 12b (12%).
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