Synlett 2013; 24(12): 1545-1548
DOI: 10.1055/s-0033-1338961
letter
© Georg Thieme Verlag Stuttgart · New York

Synthesis of (S,5Z,8E,10E)-12-Hydroxyheptadeca-5,8,10-trienoic Acid (12S-HHT) and its Analogues

Toshifumi Tojo
a   Department of Bioengineering, Tokyo Institute of Technology, Box B52, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Japan   Fax: +81(45)9245789   Email: ykobayas@bio.titech.ac.jp
,
Qian Wang
a   Department of Bioengineering, Tokyo Institute of Technology, Box B52, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Japan   Fax: +81(45)9245789   Email: ykobayas@bio.titech.ac.jp
,
Toshiaki Okuno
b   Department of Biochemistry, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
,
Takehiko Yokomizo
b   Department of Biochemistry, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
,
Yuichi Kobayashi*
a   Department of Bioengineering, Tokyo Institute of Technology, Box B52, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Japan   Fax: +81(45)9245789   Email: ykobayas@bio.titech.ac.jp
› Author Affiliations
Further Information

Publication History

Received: 09 April 2013

Accepted after revision: 10 May 2013

Publication Date:
14 June 2013 (online)


Abstract

Natural 12S-HHT and its analogues were synthesized for study of structure and activity relationship toward the BLT2 receptor. The Suzuki–Miyaura coupling was used for construction of the 8E,10E-diene moiety of 12S-HHT and analogues of (12R)- and 12-keto-types, whereas Wittig reaction was used for the synthesis of (8Z)- and (8Z,12R)-isomers.

 
  • References and Notes

  • 3 Okuno T, Iizuka Y, Okazaki H, Yokomizo T, Taguchi R, Shimizu T. J. Exp. Med. 2008; 205: 759
  • 10 Matsumura K, Hashiguchi S, Ikariya T, Noyori R. J. Am. Chem. Soc. 1997; 119: 8738
  • 11 Miyaura N, Suzuki A. Chem. Rev. 1995; 95: 2457
  • 12 Kitano Y, Matsumoto T, Wakasa T, Okamoto S, Shimazaki T, Kobayashi Y, Sato F. Tetrahedron Lett. 1987; 28: 6351
  • 13 The Noyori reduction of acetylene ketone i afforded alcohol ii with 96% ee by chiral HPLC of the derived benzoate. However, hydrostannation of the TBDPS ether iii under radical- (AIBN) or PdCl2(PPh3)2-catalyzed conditions followed by iodination gave a mixture of (S)-7, the cis-isomer, and the regioisomer (Scheme 3).
  • 14 12S-HHT (1): 1H NMR (300 MHz, CDCl3): δ = 0.90 (t, J = 7.0 Hz, 3 H), 1.14–1.80 (m, 10 H), 2.00–2.20 (m, 2 H), 2.37 (t, J = 7.5 Hz, 2 H), 2.83 (t, J = 6.0 Hz, 2 H), 2.60–4.00 (br s, 2 H), 4.12 (q, J = 6.0 Hz, 1 H), 5.30–5.52 (m, 2 H), 5.55–5.73 (m, 2 H), 6.04 (dd, J = 15.0, 10.5 Hz, 1 H), 6.18 (dd, J = 15.0, 10.5 Hz, 1 H). (8Z)-Isomer 3: 1H NMR (300 MHz, CDCl3): δ = 0.91 (t, J = 7.0 Hz, 3 H), 1.18–1.81 (m, 10 H), 2.00–2.26 (m, 2 H), 2.36 (t, J = 7.0 Hz, 2 H), 2.87 (dt, J = 16.0, 7.0 Hz, 1 H), 3.03 (dt, J = 16.0, 7.0 Hz, 1 H), 3.20–4.00 (br s, 2 H), 4.26 (q, J = 6.0 Hz, 1 H), 5.32–5.52 (m, 3 H), 5.69 (dd, J = 15.0, 6.0 Hz, 1 H), 5.98 (t, J = 11.0 Hz, 1 H), 6.58 (dd, J = 15.0, 11.0 Hz, 1 H). 12-Keto isomer 5: 1H NMR (300 MHz, CDCl3): δ = 0.91 (t, J = 7.0 Hz, 3 H), 1.23–1.42 (m, 5 H), 1.57–1.82 (m, 4 H), 2.08–2.22 (m, 2 H), 2.38 (t, J = 7.0 Hz, 2 H), 2.55 (t, J = 7.5 Hz, 2 H), 2.94 (t, J = 5.0 Hz, 2 H), 5.40–5.55 (m, 2 H), 6.05–6.26 (m, 3 H), 7.13 (dd, J = 16.0, 10.0 Hz, 1 H).