专利号:US-11718584-B2 优先权日:2019-02-22 标题 :Process for the synthesis anthranilic diamide compounds and intermediates thereof 发明人:KARRI PHANEENDRASAI; PABBA JAGADISH; SHINDE BHARAT UTTAMRAO; KALWAGHE AMOL DNYANESHWAR; MADHAVRAO KAMBLE MARUTI; KLAUSENER ALEXANDER G M; PANMAND DEEPAK SHANKAR 权利人:PI INDUSTRIES LTD 摘要:The present invention disclosed a process for the synthesis of anthranilic diamide compound of formula (I), n n n n n n n n n n wherein, R 1 , R 2 , R 3a , R 3b , R 3c , R 4 , R 5 , R 6 and Z are as defined in the detailed description. The process comprising the step of obtaining a mono- or dicyano substituted aniline compound of formula (IV) which is then converted to an anthranilic acid compound of formula (V) or an anthranilic amide compound of formula (Va). Further, the compound of formula (VI) can be optionally synthesized from compound of formula (IV or V or Va)
专利号:US-5110955-A 优先权日:1989-04-14 标 题:Tocopherol synthesis: chromane cyclization and catalysis 发明人:KNIERZINGER ANDREAS; SCALONE MICHELANGELO 权利人:HOFFMANN LA ROCHE 摘要:The invention relates to a process for the manufacture of vinylchromanes. This process is concerned with the manufacture of the compounds having the formula ##STR1## wherein R o is hydrogen or a cleavable protecting group, and comprises cyclizing a compound having the formula ##STR2## wherein R o is defined above and R 1 is n n --CH.sub.2 --CH.sub.2 --C(W)(CH.sub.3)--CHâ•?CH.sub.2 or n n n --CH.sub.2 --CH.sub.2 C(CH.sub.3)â•?CH--CH.sub.2 --W n n where W is a leaving group, n by means of a chiral transition metal-diphosphine complex. n The compounds of formula I are useful intermediates, e.g. in the manufacture of (R,R,R)-α-tocopherol.
专利号:US-9884842-B2 优先权日:2013-04-19 标题 :Combretastatin analogs 发明人:PENTHALA NARSIMHA REDDY; CROOKS PETER; SONAR VIJAYAKUMAR 权利人:UNIV ARKANSAS; BIOVENTURES LLC 摘要:The present invention relates novel heterocyclic analogs of combretastatin, their synthesis, and their use as anti-cancer compounds. In particular, compounds of Formula (I), Formula (II), and Formula (V) are provided.
专利号:CN-107903276-A 优先权日:2017-11-17 标题 :A kind of asymmetric synthesis method of ring E of harringtonine skeleton
专利号:CN-107903276-B 优先权日:2017-11-17 标 题 :A kind of asymmetric synthesis method of ring E of harringtonine skeleton