（－）-Merrilactone A-C及anislactones A-B属于anislactone类倍半萜，此类天然产物具有特征5-5二环碳环骨架、双γ-丁内酯结构单元，分子中有密集手性中心及较高的氧化态.此外，这类天然产物表现出良好的神经营养活性，特别是（－）-merrilactone A，低浓度下仍然表现出优异的活性，具有开发为治疗阿尔兹海默症等神经退行性疾病药物的潜力.此类天然产物复杂的笼状结构在合成中极具挑战性，加上其优异的生物活性，这类天然产物的合成研究备受化学工作者的关注.总结了近年来该类天然产物的全合成研究进展.
The anislactone type sesquiterpenoids, (-)-merrilactones A-C and anislactones A-B, contain[5-5] bicyclic carbocyclic skeleton, two γ-butyrolactone structural units, featuring congested stereocenters and a high oxidation level. This type of natural products shows potent neurotrophic activity. Particularly, (-)-merrilactone A exhibits excellent neurotrophic activity even at lower concentration with potential for treating neurodisease such as Elzheimer disease. Due to their complex caged structures and excellent biologic profiles, the synthesis of aislactone-type sesquiterpenoids has attracted considerable attention from synthetic communities. This article summarizes the recent advances in the synthesis of this type of sesquiterpenoids.
[1] Xiong, Y.-Z.; Gong, Z. L. China Condiment. 2008, 9, 28(in Chinese). (熊燕子, 龚正礼, 中国调味品, 2008, 9, 28.)
[2] Kouno, I.; Mori, K.; Kawano, N.; Sato, S. Tetrahedron Lett. 1989, 30, 7451.
[3] Huang, J.; Yokoyama, R.; Yang, C.; Fukuyama, Y. Tetrahedron Lett. 2000, 41, 6111.
[4] Huang, J.; Yang, C.; Masami T.; Fukuyama, Y. Tetrahedron Lett. 2001, 57, 4691.
[5] Liu, J.-F.; Wang, Y.-F.; Bi, Y.-P.; Li, H.-J.; Jia, L.; Bi, Y.-F.; Zhang, Y.-B. Tetrahedron Lett. 2013, 54, 4834.
[6] Birman, V. B.; Danishefsky, S. J. J. Am. Chem. Soc. 2002, 124, 2080.
[7] Meng, Z.; Danishefsky, S. J. Angew. Chem. Int. Ed. 2005, 44, 1511.
[8] Inoue, M.; Sato, T.; Hirama, M. J. Am. Chem. Soc. 2003, 125, 10772.
[9] Inoue, M.; Sato, T.; Hirama, M. Angew. Chem. Int. Ed. 2006, 45, 4843.
[10] Inoue, M.; Lee, N.; Kasuya, S.; Sato, T.; Hirama, M.; Moriyama, M.; Fukuyama, Y. J. Org. Chem. 2007, 72, 3065.
[11] Mehta, G.; Singh, S. R. Tetrahedron Lett. 2005, 46, 2079.
[12] Mehta, G.; Singh, S. R. Angew. Chem. Int. Ed. 2006, 45, 953.
[13] (a) He, W.; Huang, J.; Sun, X.; Frontier, A. J. J. Am. Chem. Soc. 2007, 129, 498.
(b) He, W.; Huang, J.; Sun, X.; Frontier, A. J. J. Am. Chem. Soc. 2008, 130, 300.
[14] Iriondo-Alberdi, J.; Perea-Buceta, J. E.; Greaney, M. F. Org. Lett. 2005, 7, 3969.
[15] (a) Shi, L.; Meyer, K.; Greaney, M. F. Angew. Chem. Int. Ed. 2010, 49, 9250.
(b) Nazef, N.; Davies, R. D. M.; Greaney, M. F. Org. Lett. 2012, 14, 3720.
[16] Chen, J.; Gao, P.; Yu, F.; Yang, Y.; Zhu, S.; Zhai, H. Angew. Chem. Int. Ed. 2012, 51, 5897.
[17] Liu, W.; Wang, B. Chem. Eur. J. 2018, 24, 16511.
