First total synthesis of the proposed structure of pandangolide 1
Title | First total synthesis of the proposed structure of pandangolide 1 |
Publication Type | Journal Article |
Year of Publication | 2018 |
Authors | Show, K, Gonnade, RG, Kumar, P |
Journal | European Journal of Organic Chemistry |
Issue | 25 |
Pagination | 3352-3364 |
Date Published | JUL |
ISSN | 1434-193X |
Keywords | lactones, Macrocycles, Natural products, structure elucidation, synthesis design, Total synthesis |
Abstract | The first total synthesis of the proposed structure of pandangolide 1 is reported. The synthesis was carried out using both an organocatalytic approach and a chiral-pool approach. The required stereochemistry at C-3 and C-5 was installed by using an organocatalytic aldol reaction and a stereoselective ketone reduction. The construction of the 12-membered core was achieved by 2-methyl-6-nitrobenzoic anhydride-mediated Shiina lactonization. The structure of target molecule was confirmed unambiguously by single-crystal X-ray analysis, but the optical rotation and NMR spectroscopic data of the synthetic pandangolide 1 were found to be inconsistent with the natural product. |
DOI | 10.1002/ejoc.201800675 |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 2.834 |
Divison category:
Center for Material Characterization (CMC)
Organic Chemistry
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