专利号:US-11548898-B2 优先权日:2017-07-06 标题 :Synthesis of halichondrins 发明人:KISHI YOSHITO; AI YANRAN; YE NING; WANG QIAOYI; YAHATA KENZO; ISO Kentaro; NAINI SANTHOSH REDDY; YAMASHITA SHUJI; LEE JIHOON; OHASHI ISAO; FUKUYAMA TAKASHI 权利人:HARVARD COLLEGE; EISAI R&D MAN CO LTD 摘要:The present invention provides methods for the synthesis of ketones involving a Ni/Zr-mediated coupling reaction. The Ni/Zr-mediated ketolization reactions can be used in the synthesis of halichondrins (e.g., halichondrin A, B, C; homohalichondrin A, B, C; norhalichondrin A, B, C), and analogs thereof. Therefore, the present invention also provides synthetic methods useful for the synthesis of halichondrins, and analogs thereof. Also provided herein are compounds (i.e., intermediates) useful in the synthesis of halichondrins, and analogs thereof. In particular, the present invention provides methods and compounds useful in the synthesis of compound of Formula (H3-A).
专利号:US-2004018598-A1 优先权日:2000-05-30 标题 :Bio-intermediates for use in the chemical synthesis of polyketides 发明人:SANTI DANIEL; ASHLEY GARY; MYLES DAVID C 摘要:The present invention relates to compounds made by a subset of modules from one or more polyketide synthase (“PKS†) genes that are used as starting material in the chemical synthesis of novel molecules, particularly naturally occurring polyketides or derivatives thereof. The biologically derived intermediates (“bio-intermediates†) generally represent particularly difficult compounds to synthesize using traditional chemical approaches due to one or more stereocenters. In one aspect of the invention, an intermediate in the synthesis of epothilone is provided that feeds into the synthetic protocol of Danishefsky and co-workers. In another aspect of the invention, intermediates in the synthesis of discodermolide are provided that feed into the synthetic protocol of Smith and co-workers. By taking advantage of the inherent stereochemical specificity of biological processes, the syntheses of key intermediates and thus the overall syntheses of compounds like epothilone and discodermolide are greaty simplified.
专利号:US-11136335-B2 优先权日:2016-06-30 标题:Prins reaction and intermediates useful in the synthesis of halichondrin macrolides and analogs thereof 发明人:CHASE CHARLES E; CHOI HYEONG-WOOK; ENDO ATSUSHI; FANG FRANCIS G; KIM DAE-SHIK 权利人:EISAI R&D MAN CO LTD 摘要:The invention provides methods for the synthesis of a halichondrin macrolides or analogs thereof through a cyclization reaction strategy. The strategy of the present invention involves subjecting an intermediate to Prins reaction conditions to afford a macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides or analogs thereof and methods for preparing the same.
专利号:US-9809566-B2 优先权日:2012-09-06 标题:Organocatalytic process for asymmetric synthesis of decanolides 发明人:RAWAT VARUN; DEY SOUMEN; SHELKE ANIL MARUTI; SURYAVANSHI GURUNATH MALLAPPA; SUDALAI ARUMUGAM 权利人:COUNCIL SCIENT IND RES 摘要:The present invention discloses organocatalytic process for asymmetric synthesis of highly enantioselective decanolide compounds in high yield with >99% ee. Further, the present invention disclose cost effective, improved organocatalytic process for asymmetric synthesis of highly enantioselective decanolides compounds from non-chiral, cheap, easily available raw materials.
专利号:US-7202256-B2 优先权日:2004-04-14 标题:Proline CCI-779, production of and uses therefor, and two-step enzymatic synthesis of proline CCI-779 and CCI-779 发明人:GU JIANXIN; RUPPEN MARK E; RAVEENDRANATH PANOLIL; CHEW WARREN; SHAW CHIA-CHENG 权利人:WYETH CORP 摘要:Methods for the synthesis of CCI-779 and proline-CCI-779 are described, including a method involving lipase-catalyzed acetylation of 42-hydroxy of rapamycin with a vinyl ester of 2,2-bis(hydroxymethyl) propionic acid in an organic solvent followed by deprotection. Also provided are products containing proline-CCI-779 and uses thereof.
专利号:US-9884830-B2 优先权日:2004-05-21 标题 :Synthesis of tetracyclines and analogues thereof 发明人:MYERS ANDREW G; CHAREST MARK G; LERNER CHRISTIAN D; BRUBAKER JASON D; SIEGEL DIONICIO R 权利人:HARVARD COLLEGE 摘要:The tetracycline class of antibiotics has played a major role in the treatment of infectious diseases for the past 50 years. However, the increased use of the tetracyclines in human and veterinary medicine has led to resistance among many organisms previously susceptible to tetracycline antibiotics. The modular synthesis of tetracyclines and tetracycline analogs described provides an efficient and enantioselective route to a variety of tetracycline analogs and polycyclines previously inaccessible via earlier tetracycline syntheses and semi-synthetic methods. These analogs may be used as anti-microbial agents or anti-proliferative agents in the treatment of diseases of humans or other animals.
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