Volume 46; Issue 13-14

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Tetrahedron
Volume 46; Issue 13-14

Tetrahedron

Volume 46; Issue 13-14

1

Chiral synthesis via organoboranes. 25. B-(Z and E)-crotylbis-(2-isocaranyl)boranes as valuable reagents for the asymmetric crotylboration of aldehydes

Herbert C. Brown, Ramnarayan S. Randad

Journal:

Year:

1990

Language:

english

File:

PDF, 351 KB

english, 1990

2

Chiral synthesis VIA organoboranes. 26. An efficient synthesis of isoprenyl derivatives of borane - valuable reagents for the isoprenylboration of aldehydes. A convenient route to both enantiomers of ipsenol and ipsdienol in high optical purity

Herbert C. Brown, Ramnarayan S. Randad

Journal:

Year:

1990

Language:

english

File:

PDF, 788 KB

english, 1990

3

A new synthesis of the four stereoisomers of 3,11-dimethyl-2-nonacosanone, the female-produced sex pheromone of the german cockroach

Kenji Mori, Hirosato Takikawa

Journal:

Year:

1990

Language:

english

File:

PDF, 1.01 MB

english, 1990

4

Stereospecific approach to 3-oxocen-7-ones via aliphatic claisen rearrangement. synthesis of (+)-(2R,8S)- and (+)-(2R,8J)-lauthisan

Leo A. Paquette, Thomas J. Sweeney

Journal:

Year:

1990

Language:

english

File:

PDF, 870 KB

english, 1990

5

A New approach to 1,7-dioxaspiro[5.5]undec-4-enes via metallated allenol ethers. Synthesis of Lacrimin A

Andrew Takle, Philip Kocieński

Journal:

Year:

1990

Language:

english

File:

PDF, 1.24 MB

english, 1990

6

Stereocontrolled Second Generation Syntheses of the ABC and FG Ring Systems of Brevetoxin B

K.C. Nicolaou, D.A. Nugiel, E. Couladouros, C.-K. Hwang

Journal:

Year:

1990

Language:

english

File:

PDF, 2.45 MB

english, 1990

7

A highly stereoselective synthesis of (z)-1-phenylthio-1-trialkyl- silylalkenes from 1-methoxy-1-phenylthio-1-trialkylsilylalkanes

Tadakatsu Mandai, Makoto Kohama, Hiroaki Sato, Mikio Kawada, Jiro Tsuji

Journal:

Year:

1990

Language:

english

File:

PDF, 545 KB

english, 1990

8

Stereodivergent synthesis of the enolates of a β-amino ester by using lithium N-benzyltrimethylsilylamide

Naoki Asao, Tadao Uyehara, Yoshinori Yamamoto

Journal:

Year:

1990

Language:

english

File:

PDF, 685 KB

english, 1990

9

Stereocontrolled synthesis of highly functionalized cyclohexenes. A short synthesis of a chorismic acid precursor

Gary H. Posner, Todd D. Nelson

Journal:

Year:

1990

Language:

english

File:

PDF, 861 KB

english, 1990

10

Total synthesis of the antiviral (±)-virantmycin†

Malcolm L. Hill, Ralph A. Raphael

Journal:

Year:

1990

Language:

english

File:

PDF, 673 KB

english, 1990

11

Stereoselective reduction of acetals. A method for reductive generation of heterocyclic ring systems

Kazuaki Ishihara, Atsunori Mori, Hisashi Yamamoto

Journal:

Year:

1990

Language:

english

File:

PDF, 925 KB

english, 1990

12

Stereoselective synthesis of erythronolide a by extremely efficient lactonization based on conformational adjustment and high activation of seco-acid1

Masataka Hikota, Hitoshi Tone, Kiyoshi Horita, Osamu Yonemitsu

Journal:

Year:

1990

Language:

english

File:

PDF, 1.12 MB

english, 1990

13

The total synthesis of rifamycin W

Masaya Nakata, Nobutake Akiyama, Jun-ichi Kamata, Kyoko Kojima, Hirokazu Masuda, Mitsuhiro Kinoshita, Kuniaki Tatsuta

Journal:

Year:

1990

Language:

english

File:

PDF, 1.51 MB

english, 1990

14

Asymmetric aldol-type reaction between both achiral ketene silyl acetals of acetic acid esters and aldehydes by the use of a chiral promoter

Teruaki Mukaiyama, Shū Kobayashi, Tetsuya Sano

Journal:

Year:

1990

Language:

english

File:

PDF, 510 KB

english, 1990

15

Enantio- and diastereoselective aldol reactions of achiral ethyl and methyl ketones with aldehydes: the use of enol diisopinocampheylborinates

Ian Paterson, Jonathan M. Goodman, M. Anne Lister, Russell C. Schumann, Cynthia K. McClure, Roger D. Norcross

Journal:

Year:

1990

Language:

english

File:

PDF, 1.57 MB

english, 1990

16

Studies of enzyme-mediated reactions. Part 161. Stereochemical course of the formation of 5-hydroxytryptamine (serotonin) by decarboxylation of (2S)-5-hydroxytryptophan with the aromatic L-amino acid decarboxylase (E.C. 4.1.1.28) from hog kidney

R. Battersby, Andrew Scott, James Staunton

Journal:

Year:

1990

Language:

english

File:

PDF, 765 KB

english, 1990

17

Asymmetric synthesis via electrophile-mediated cyclisations

David N.A. Fox, Timothy Gallagher

Journal:

Year:

1990

Language:

english

File:

PDF, 872 KB

english, 1990

18

An enantioselective synthesis of (+)-bostrycin leading to a revision of the absolute configuration of its natural antipode

David S. Larsen, Richard J. Stoodley

Journal:

Year:

1990

Language:

english

File:

PDF, 1.37 MB

english, 1990

19

Stereospecific synthesis of dealanylalahopcin

Jack E. Baldwin, Robert M. Adlington, David W. Gollins, Christopher J. Schofield

Journal:

Year:

1990

Language:

english

File:

PDF, 943 KB

english, 1990

20

Structure of ternatin B1, a pentaacylated anthocyanin substituted on the B-ring asymmetrically with two long chains

Tadao Kondo, Minoru Ueda, Toshio Goto

Journal:

Year:

1990

Language:

english

File:

PDF, 454 KB

english, 1990

21

Diastereo- and enantioselective synthesis of α,α'-Disubstituted spiroacetals using the SAMP-/RAMP-hydrazone method

Dieter Enders, Winfried Gatzweiler, Eleonore Dederichs

Journal:

Year:

1990

Language:

english

File:

PDF, 2.29 MB

english, 1990

22

The asymmetric epoxidation of divinyl carbinols: theory and applications

David B. Smith, Wang Zhaoyin, Stuart L. Schreiber

Journal:

Year:

1990

Language:

english

File:

PDF, 967 KB

english, 1990

23

Three-component coupling synthesis of prostaglandins. A simplified, general procedure

Masaaki Suzuki, Yasushi Morita, Hiroshi Koyano, Masahiro Koga, Ryoji Noyori

Journal:

Year:

1990

Language:

english

File:

PDF, 892 KB

english, 1990

24

4-alkoxycarbonyloxazoles as β-hydroxy-α-amino acid synthons: efficient stereoselective syntheses of 3-amino-2,3,6-trideoxyhexoses and a hydroxy amino acid moiety of Al-77-B

Yasumasa Hamada, Akiyoshi Kawai, Toshiaki Matsui, Osamu Hara, Takayuki Shioiri

Journal:

Year:

1990

Language:

english

File:

PDF, 1.65 MB

english, 1990

25

Asymmetric synthesis of 2,4-disubstituted butyrolactones using the iron chiral auxiliary [(η5-C5H5)Fe(CO)(PPh3)]

Stephen G. Davies, Robert Polywka, Peter Wamer

Journal:

Year:

1990

Language:

english

File:

PDF, 627 KB

english, 1990

26

Tandem [4+2]/[3+2]-cycloadditions. 2. Asymmetric induction with a chiral vinyl ether

Scott E. Denmark, C.B.W. Senanayake, Ho Ginny-Dai

Journal:

Year:

1990

Language:

english

File:

PDF, 1.76 MB

english, 1990

27

The nucleophilic displacement route to homochiral arylphosphine oxides

John M. Brown, Joseph V. Carey, Michael J.H. Russell

Journal:

Year:

1990

Language:

english

File:

PDF, 731 KB

english, 1990

28

Stereoselectivity in the sigmatropic rearrangement of eight- and nine-membered cyclic allylsulfonium ylides. synthesis of vinyl- substituted butyro- and valerolactones

Fusao Kido, Subhash C. Sinha, Toshiya Abiko, Masataka Watanabe, Akira Yoshikoshi

Journal:

Year:

1990

Language:

english

File:

PDF, 1013 KB

english, 1990

29

Total synthesis of verticillene. A biomimetic approach to the taxane family of alkaloids

Michael J. Begley, Christopher B. Jackson, Gerald Pattenden

Journal:

Year:

1990

Language:

english

File:

PDF, 1.22 MB

english, 1990

30

Sulphone-mediated cyclobutanone to α-alkoxy-cyclopentanone ring expansion reactions; scope, limitations and applications

Harry Finch, Adnan M.M. Mjalli, John G. Montana, Stanley M. Roberts, Richard J.K. Taylor

Journal:

Year:

1990

Language:

english

File:

PDF, 1.57 MB

english, 1990

31

Diastereoselective cyclopropanations of chiral bicyclic lactams leading to enantiomerically pure cyclopropanes. Application to the total synthesis of CIS-(1S, 3R)-deltamethrinic acid and R-(-)- dictyopterene C

Daniel Romo, Jeffrey L. Romine, Wanda Midura, A.I. Meyers

Journal:

Year:

1990

Language:

english

File:

PDF, 2.73 MB

english, 1990

32

Microbial oxidation in synthesis: preparation of myo-inositol phosphates and related cyclitol derivatives from benzene

Steven V. Ley, Margarita Parra, Alison J. Redgrave, Francine Sternfeld

Journal:

Year:

1990

Language:

english

File:

PDF, 2.22 MB

english, 1990