Synthesis and Analysis of Natural‐Product‐Like Macrocycles by Tandem Oxidation/Oxa‐Conjugate Addition Reactions
作者:Hyunji Lee、Kayla Sylvester、Emily R. Derbyshire、Jiyong Hong
DOI:10.1002/chem.201900620
日期:2019.5.7
traditional small‐molecule drug discovery programs focus on a relatively narrow range of chemical space, most human proteins are viewed as unreachable targets. Consequently, there is a strong interest in expanding the chemical space in drug discovery beyond traditional small molecules. Here, a strategy for the preparation of a broad natural‐product‐like macrocyclic library by using the tandem allylic
the totalsynthesis of Paecilomycins E (1) and F (2), Cochliomycin C (4) and 6-epi-Cochliomycin C (3) is described. The synthesis involves novel route to the synthesis of Paecilomycin E and F and further conversion to Cochliomycin C and 6-epi-Cochliomycin C. Olefin metathesis and base promoted macro lactonization being the key reactions followed by chlorination to achieve target Cochliomycin C and
摘要描述了一种高效、简洁的方法来全合成拟青霉素 E (1) 和 F (2)、Cochliomycin C (4) 和 6-epi-Cochliomycin C (3)。该合成涉及合成拟青霉素 E 和 F 并进一步转化为 Cochliomycin C 和 6-epi-Cochliomycin C 的新途径。烯烃复分解和碱促进大环内酯化是关键反应,然后氯化以达到目标 Cochliomycin C 和 6-epi -Cochliomycin C. 图形摘要
Stereoselective synthesis of (-)-tetrahydropyrenophorol
from the plant Fagonia cretica . The total synthesis of (–)-1-tetrahydropyrenophorol was achieved in an elegant and linear manner from readily an accessible racemic epoxide. The archetypal reactions include regioselective opening of the epoxide, Sharpless asymmetric dihydroxylation, and Mitsunobu cyclodimerization to construct the requisite 16-membered bis-lactone. The synthetic approach demonstrated