1
|
Sono M, Yamashita Y, Hirai M, Nishio Y, Takaoka S, Tori M. One-Electron Oxidation of Geranyl Acetone Derivatives Using Ceric(IV) Ammonium Nitrate and Manganese(III) Acetate: Carbon–Carbon Bond Formation. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221109424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Oxidation of geranyl acetone derivatives with ceric ammonium nitrate (CAN) and Mn(OAc)3 afforded tricyclic and bicyclic compounds as well as hydroxy and nitro compounds as a result of one-electron oxidation followed by carbon–carbon bond formation. This is the first example of radical cyclization (formed by one-electron oxidation) of geranyl acetone derivative 1 and its isomer 4 to give tri- and bicyclic products with carbon–carbon bond formation.
Collapse
Affiliation(s)
- Masakazu Sono
- Tokushima Bunri University Faculty of Pharmaceutical Sciences, Tokushima, Japan
| | - Yui Yamashita
- Tokushima Bunri University Faculty of Pharmaceutical Sciences, Tokushima, Japan
| | - Mayu Hirai
- Tokushima Bunri University Faculty of Pharmaceutical Sciences, Tokushima, Japan
| | - Yayoi Nishio
- Tokushima Bunri University Faculty of Pharmaceutical Sciences, Tokushima, Japan
| | - Shigeru Takaoka
- Tokushima Bunri University Faculty of Pharmaceutical Sciences, Tokushima, Japan
| | - Motoo Tori
- Tokushima Bunri University, Tokushima, Japan
| |
Collapse
|
2
|
Gössinger E. Chemistry of the Secondary Metabolites of Termites. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2019; 109:1-384. [PMID: 31637529 DOI: 10.1007/978-3-030-12858-6_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Isolation, structure determination, synthesis, and biochemistry of the low-molecular-weight compounds of the secretion of exocrine glands of termites are described, with an emphasis on pheromones and defensive compounds.
Collapse
Affiliation(s)
- Edda Gössinger
- Institute of Chemistry, University of Vienna, Vienna, Austria.
- , Mistelbach, Austria.
| |
Collapse
|
3
|
Arnold AM, Pöthig A, Drees M, Gulder T. NXS, Morpholine, and HFIP: The Ideal Combination for Biomimetic Haliranium-Induced Polyene Cyclizations. J Am Chem Soc 2018; 140:4344-4353. [PMID: 29412652 DOI: 10.1021/jacs.8b00113] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In contrast to Nature that accomplishes polyene cyclizations seemingly with ease, such transformations are difficult to conduct in the lab. In our program dealing with the development of selective halogenations of alkenes, we now asserted that standard X+ reagents are perfectly suited for the biomimetic cation-π cyclization of both electron rich and poor linear polyenes in the presence of the Lewis base morpholine and the Lewis acid HFIP. The method stands out due to its broad substrate scope and practicability together with high chemical yields and excellent selectivities, even for highly challenging chloriranium-induced polyene cyclizations.
Collapse
Affiliation(s)
- Andreas M Arnold
- Biomimetic Catalysis, Department of Chemistry , Technical University of Munich , Lichtenbergstrasse 4 , 85748 Garching , Germany.,Catalysis Research Center , Technical University of Munich , Ernst-Otto-Fischer-Straße 1 , 85748 Garching , Germany
| | - Alexander Pöthig
- Catalysis Research Center , Technical University of Munich , Ernst-Otto-Fischer-Straße 1 , 85748 Garching , Germany
| | - Markus Drees
- Catalysis Research Center , Technical University of Munich , Ernst-Otto-Fischer-Straße 1 , 85748 Garching , Germany
| | - Tanja Gulder
- Biomimetic Catalysis, Department of Chemistry , Technical University of Munich , Lichtenbergstrasse 4 , 85748 Garching , Germany.,Catalysis Research Center , Technical University of Munich , Ernst-Otto-Fischer-Straße 1 , 85748 Garching , Germany
| |
Collapse
|
4
|
Ascheberg C, Bock J, Buß F, Mück-Lichtenfeld C, Daniliuc CG, Bergander K, Dielmann F, Hennecke U. Stable Bromiranium Ions with Weakly-Coordinating Counterions as Efficient Electrophilic Brominating Agents. Chemistry 2017. [DOI: 10.1002/chem.201701643] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Christoph Ascheberg
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstr. 40 48149 Münster Germany
| | - Jonathan Bock
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstr. 40 48149 Münster Germany
| | - Florenz Buß
- Institut für Anorganische Chemie; Westfälische Wilhelms-Universität; Corrensstr. 28/30 48149 Münster Germany
| | | | - Constantin G. Daniliuc
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstr. 40 48149 Münster Germany
| | - Klaus Bergander
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstr. 40 48149 Münster Germany
| | - Fabian Dielmann
- Institut für Anorganische Chemie; Westfälische Wilhelms-Universität; Corrensstr. 28/30 48149 Münster Germany
| | - Ulrich Hennecke
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; Corrensstr. 40 48149 Münster Germany
| |
Collapse
|
5
|
Chung WJ, Vanderwal CD. Stereoselective Halogenation in Natural Product Synthesis. Angew Chem Int Ed Engl 2016; 55:4396-434. [PMID: 26833878 PMCID: PMC6028003 DOI: 10.1002/anie.201506388] [Citation(s) in RCA: 196] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/27/2015] [Indexed: 01/23/2023]
Abstract
At last count, nearly 5000 halogenated natural products have been discovered. In approximately half of these compounds, the carbon atom to which the halogen is bound is sp(3) -hybridized; therefore, there are an enormous number of natural products for which stereocontrolled halogenation must be a critical component of any synthesis strategy. In this Review, we critically discuss the methods and strategies used for stereoselective introduction of halogen atoms in the context of natural product synthesis. Using the successes of the past, we also attempt to identify gaps in our synthesis technology that would aid the synthesis of halogenated natural products, as well as existing methods that have not yet seen application in complex molecule synthesis. The chemistry described herein demonstrates yet again how natural products continue to provide the inspiration for critical advances in chemical synthesis.
Collapse
Affiliation(s)
- Won-jin Chung
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju, South Korea.
| | | |
Collapse
|
6
|
Chung WJ, Vanderwal CD. Stereoselektive Halogenierungen in der Naturstoffsynthese. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201506388] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Won-jin Chung
- Department of Chemistry; Gwangju Institute of Science and Technology; Gwangju Südkorea
| | | |
Collapse
|
7
|
Sakakura A, Ishihara K. Stereoselective Electrophilic Cyclization. CHEM REC 2015; 15:728-42. [DOI: 10.1002/tcr.201500005] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Indexed: 12/27/2022]
Affiliation(s)
- Akira Sakakura
- Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushima-naka, Kita-ku Okayama 700-8530 Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering; Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, (Japan) and Japan Science and Technology Agency (JST), CREST; Furo-cho, Chikusa Nagoya 464-8603 Japan
| |
Collapse
|
8
|
Serra S, Piccioni O. A new chemo-enzymatic approach to the stereoselective synthesis of the flavors tetrahydroactinidiolide and dihydroactinidiolide. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
9
|
Recsei C, McErlean CSP. Accessing Brominated Natural Product Motifs Using Phosphoramidite Catalysis. Aust J Chem 2015. [DOI: 10.1071/ch14539] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This article describes the application of a first-generation phosphoramidite catalyst to the construction of the most commonly encountered subunits of bromine-containing natural products. The process is compared with previous efforts, and is found to be complementary to existing methods. Application of the process enables bromocarbocyclisations, bromoetherifications, and bromoallene formation using the common laboratory reagent N-bromosuccinimide.
Collapse
|
10
|
Moriyama K, Nishinohara C, Sugiue T, Togo H. Oxidative oxygen-nucleophilic bromo-cyclization of alkenyl carbonyl compounds without organic wastes using alkali metal reagents in green solvent. RSC Adv 2015. [DOI: 10.1039/c5ra19851h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A bromo-lactonization of alkenyl carboxylic acids and a bromo-cyclization ofN-allyl amides as oxygen-nucleophilic bromo-cyclization reactions were developedviathe oxidative umpolung of bromide using alkali metal bromide and inorganic oxidant.
Collapse
Affiliation(s)
- Katsuhiko Moriyama
- Department of Chemistry
- Graduate School of Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Chihiro Nishinohara
- Department of Chemistry
- Graduate School of Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Toru Sugiue
- Department of Chemistry
- Graduate School of Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Hideo Togo
- Department of Chemistry
- Graduate School of Science
- Chiba University
- Chiba 263-8522
- Japan
| |
Collapse
|
11
|
Braddock DC, Marklew JS, Foote KM, White AJP. An Enantiospecific Polyene Cyclization Initiated by an Enantiomerically Pure Bromonium Ion. Chirality 2013; 25:692-700. [DOI: 10.1002/chir.22194] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 05/10/2013] [Indexed: 11/08/2022]
|
12
|
Sawamura Y, Nakatsuji H, Sakakura A, Ishihara K. “Phosphite–urea” cooperative high-turnover catalysts for the highly selective bromocyclization of homogeranylarenes. Chem Sci 2013. [DOI: 10.1039/c3sc51432c] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
|
13
|
Affiliation(s)
- Soo J. Park
- School
of Chemistry and ‡Crystal Structure Analysis Facility, School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Jason R. Price
- School
of Chemistry and ‡Crystal Structure Analysis Facility, School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Matthew H. Todd
- School
of Chemistry and ‡Crystal Structure Analysis Facility, School of Chemistry, The University of Sydney, NSW 2006, Australia
| |
Collapse
|
14
|
Lin H, Pochapsky SS, Krauss IJ. A short asymmetric route to the bromophycolide A and D skeleton. Org Lett 2011; 13:1222-5. [PMID: 21309525 DOI: 10.1021/ol200099n] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An asymmetric synthesis of the bromophycolide D ring system has been achieved in seven steps from a known geranylgeranylated benzoate, via bromonium-promoted transannular cyclization of a macrocyclic intermediate.
Collapse
Affiliation(s)
- Hongkun Lin
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110, USA
| | | | | |
Collapse
|
15
|
Snyder SA, Treitler DS, Brucks AP. Simple reagents for direct halonium-induced polyene cyclizations. J Am Chem Soc 2011; 132:14303-14. [PMID: 20858010 DOI: 10.1021/ja106813s] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although there are many reagent combinations that can initiate polyene cyclizations, simple electrophilic halogen sources have not yet proven broadly effective as promoters of such processes. Herein is described a readily prepared and stable class of reagents capable of effecting such transformations for a wide range of electron-rich and -deficient terpenes derived from geraniol, farnesol, and nerol, thereby enabling the effective synthesis of a diverse array of complex chlorine-, bromine-, and iodine-containing polycyclic frameworks. Efforts to date have led to the first racemic laboratory total synthesis and structural revision of the anti-HIV natural product peyssonol A as well as an efficient and concise inaugural total synthesis of peyssonoic acid A. They have also permitted formal racemic total syntheses of aplysin-20, loliolide, K-76, and stemodin to be achieved through routes that are typically shorter, higher-yielding, and more environmentally conscious than previous efforts. Preliminary attempts to use chiral forms of the reagent class for enantioselective alkene halogenation are also described.
Collapse
Affiliation(s)
- Scott A Snyder
- Department of Chemistry, Columbia University, Havemeyer Hall, 3000 Broadway, New York, New York 10027, USA.
| | | | | |
Collapse
|
16
|
Braddock DC, Marklew JS, Thomas AJF. Enantiospecific bromonium ion generation and intramolecular capture: a model system for asymmetric bromonium ion-induced polyene cyclisations. Chem Commun (Camb) 2011; 47:9051-3. [DOI: 10.1039/c1cc13619d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Snyder SA, Treitler DS, Schall A. A two-step mimic for direct, asymmetric bromonium- and chloronium-induced polyene cyclizations. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
18
|
Snyder S, Treitler D. Et2SBr⋅SbCl5Br: An Effective Reagent for Direct Bromonium-Induced Polyene Cyclizations. Angew Chem Int Ed Engl 2009; 48:7899-903. [DOI: 10.1002/anie.200903834] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
19
|
Snyder S, Treitler D. Et2SBr⋅SbCl5Br: An Effective Reagent for Direct Bromonium-Induced Polyene Cyclizations. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903834] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
20
|
Dabdoub MJ, Silveira CC, Lenardão EJ, Guerrero PG, Viana LH, Kawasoko CY, Baroni AC. Total synthesis of (±)-dihydroactinidiolide using selenium-stabilized carbenium ion. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.07.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
21
|
|
22
|
Nagano H, Nagasawa T, Sakuma M. Synthesis of 2-Polyprenyl-Substituted Polyprenols and Their Conversion into Phosphates. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1997. [DOI: 10.1246/bcsj.70.1969] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
23
|
Imamura PM, Santiago GMP. Chlorosulfonic Acid Mediated Cyclization of Homoterpenic Acid. SYNTHETIC COMMUN 1997. [DOI: 10.1080/00397919708004111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
24
|
Crich D, Natarajan S, Crich JZ. Synthesis of the taxol AB-system by olefination of an A-ring C1 ketone and direct B-ring closure. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00411-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
25
|
Krafft ME, Cheung YY, Wright C, Cali R. Addition of Hexacarbonyldicobalt-Stabilized Propargyl Cations to Alkenes. J Org Chem 1996; 61:3912-3915. [PMID: 11667255 DOI: 10.1021/jo952160c] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marie E. Krafft
- Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006
| | | | | | | |
Collapse
|
26
|
Crich D, Crich JZ. Concise synthesis of a taxol A-ring synthon: Formation of a 1,2-alkylidene linkage via acetylene chemistry. Tetrahedron Lett 1994. [DOI: 10.1016/s0040-4039(00)77146-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
27
|
Trost BM, Zhi L. Atom economy. A simple Pd catalyzed addition of pronucleophiles with dienes. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)74154-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
28
|
Vlad PF, Ungur ND, Perutskii VB. Superacid cyclization of homo- and bishomoisoprenoid acids. Chem Heterocycl Compd (N Y) 1991. [DOI: 10.1007/bf00474221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
29
|
Yoneda R, Osaki T, Harusawa S, Kurihara T. Dephosphorylation of cyano diethyl phosphates by reduction with lithium–liquid ammonia: an efficient method for conversion of carbonyl compounds into nitriles. ACTA ACUST UNITED AC 1990. [DOI: 10.1039/p19900000607] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
|
31
|
|
32
|
Kawashima M, Sato T, Fujisawa T. Regio- and Stereoselective Ring Opening of ω-Alkenyllactones Using Organocopper Reagents. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1988. [DOI: 10.1246/bcsj.61.3255] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
33
|
Cyclisation electrophile induite par le triflate stanneux: Synthese du (±)-tetrahydroactinidiolide trans. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(01)83859-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
34
|
|
35
|
Synthesis of both the enantiomers of dihydroactinidiolide. a pheromone component of the red imported fire ant. Tetrahedron 1986. [DOI: 10.1016/s0040-4020(01)87429-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
36
|
Prestwich GD, Eng WS, Roe RM, Hammock BD. Synthesis and bioassay of isoprenoid 3-alkylthio-1,1,1-trifluoro-2-propanones: potent, selective inhibitors of juvenile hormone esterase. Arch Biochem Biophys 1984; 228:639-45. [PMID: 6696451 DOI: 10.1016/0003-9861(84)90033-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Four 3-alkylthio-1,1,1-trifluoro-2-propanones with juvenile hormone-like side chains were prepared from citronellol and homogeraniol. These substrates were designed as possible transition-state analogs for the juvenile hormone (JH)-specific esterases present in insects. These four isoprenoid trifluormethyl ketones were assayed in vitro with JH esterase and general esterases from larvae of the cabbage looper, Trichoplusia ni (Lepidoptera, Noctuidae), and with eel acetylcholinesterase and bovine chymotrypsin. JH esterase inhibition I50 values were in the nanomolar range for all four compounds, while the other esterases had I50's which were 10(3) to 10(5) higher. The high selectivity of these inhibitors is believed to be due to their similarity in size and functionality to natural JH III. Treatment of T. ni larvae in vivo with solutions of the most active analog, 3-[(E)-4,8-dimethyl-3,7-nonadienylthio]-1,1,1-trifluoro-2-propanon e (DNTFP) causes a dose-dependent delay in pupation and a concurrent selective inhibition of JH esterase. These data support the hypothesis that the reduction in in vivo JH titer in larval T. ni is due, in part, to hydrolysis of the hormone by selective esterases. DNTFP appears to be competing with JH for the active site of JH esterase.
Collapse
|
37
|
Chakraborty T, Chandrasekaran S. A facile entry to bicyclic γ-lactones and a short synthesis of (±)-dihydroactinidiolide. Tetrahedron Lett 1984. [DOI: 10.1016/s0040-4039(01)81319-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
38
|
|
39
|
|
40
|
Fujisawa T, Sato T, Kawashima M, Nakagawa M. ONE-STEP SYNTHESIS OF HOMOTERPENOIC CARBOXYLIC ACIDS FROM β-ISOPROPENYL-β-PROPIOLACTONE AND ORGANOCOPPER REAGENTS. CHEM LETT 1981. [DOI: 10.1246/cl.1981.1307] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
41
|
Murai A, Abiko A, Kato K, Masamune T. CATIONIC CYCLIZATION OF GERANONITRILE AND RELATED COMPOUNDS VIA THEIR BROMOHYDRINS: APPLICATION TO THE SYNTHESIS OF (±)-SNYDEROLS. CHEM LETT 1981. [DOI: 10.1246/cl.1981.1125] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
42
|
Saito A, Matsushita H, Tsujino Y, Kaneko H. SYNTHESIS OF (±)-NORAMBREINOLIDE BY CYCLIZATION OFTRANS-β-MONOCYCLOHOMOFARNESIC ACID. CHEM LETT 1981. [DOI: 10.1246/cl.1981.757] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
43
|
Rouessac A, Rouessac F, Zamarlik H. Phenylselenolactonisation des acides homogeranique et homonerique. Tetrahedron Lett 1981. [DOI: 10.1016/s0040-4039(01)92958-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
44
|
Kametani T, Fukumoto K, Kurobe H, Nemoto H. Stereoselective olefinic cyclization assisted by the selenyl group — biogenetic-type synthesis of caparrapi oxide. Tetrahedron Lett 1981. [DOI: 10.1016/s0040-4039(01)81984-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
45
|
Kojima Y, Wakita S, Kato N. Syntheses of 3-substituted furans via lithium di(3-furyl)cuprate—the application of lithium di(3-furyl)cuprate to the total synthesis of dendrolasin. Tetrahedron Lett 1979. [DOI: 10.1016/s0040-4039(01)86653-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|