Introduction of 2,4-pentadienyl side chain to halogenated p-quinones is performed with (2,4-pentadienyl)trimethylstannane to afford 2-halo-3-(2,4-pentadienyl)-1,4-quinones. Pyrolytic decomposition of the corresponding azidoquinones derived from the obtained haloquinones affords 3H-pyrrolo[1,2-a]indol-5,8-dione derivatives in good yields.
Rust disease control by Aphanocladium album and/or Beauveria brongniartii
申请人:Subbiah Ven
公开号:US20070110726A1
公开(公告)日:2007-05-17
There is disclosed a method and composition for controlling rust disease in plants. Metabolites produced by
Aphanocladium album
mycoparasites are recovered and applied in an effective amount to plants at risk for acquiring rust disease More specifically, the application of the metabolite converts infective urediniospores that cause rust disease into non-infective teliospores. In a more specific aspect, the metabolite is reacted with another substance or under a specific reaction to result in a different compound which is also effective against rust disease.
作者:Miguel Peña-López、M. Montserrat Martínez、Luis A. Sarandeses、José Pérez Sestelo
DOI:10.1021/jo100779z
日期:2010.8.6
novel prenylated naphthoquinone antibiotic, was synthetized from ethyl acetoacetate in three steps (58% overall yield). The key step of the synthesis is the construction of the naphthoquinone skeleton by a regioselective Diels−Alder reaction between a 2-alkyl 1,3-bis(trimethylsilyloxy)-1,3-diene derivative and a bromoquinone. This short and versatile approach confirms the structure of fumaquinone and
A modular approach to the total synthesis of furaquinocins culminated in the total syntheses of furaquinocin A, B, and E. A Pd-catalyzed dynamic kinetic asymmetric transformation (DYKAT) on carbonates derived from Baylis-Hillman adducts, followed by a reductive Heckcyclization allows the enantio- and diastereoselective construction of dihydrobenzofuran 32. Introduction of a double unsatured side chain
A convenient synthesis of 7-methoxymitosene by the photolysis of aminobenzoquinones
作者:Mitsuo Akiba、Satoshi Ikuta、Toyozo Takada
DOI:10.1039/c39830000817
日期:——
A simple method for the preparation of pyrrolo[1,2-a]indoloquinone derivatives using the photolysis of amino-quinones has led to a formal synthesis of 7-methoxymitosene.
利用氨基醌的光解法制备吡咯并[1,2- a ]吲哚醌衍生物的简单方法导致了正式合成7-甲氧基米托烯。