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51

NOVEL 9,9-DIOL SYSTEMS STARTING FROM A 3,7- DIAZABICYCLO[3.3.1]NONAN-9-ONE NUCLEUS-SINGLE CRYSTAL X-RAY DIFFRACTION ANALYSIS OF 3-(2-PROPYL)-7-BENZYL-3,7-DIAZABICY CL0[3.3.1]NONAN-9,9-DIOL HYDROBROMIDE, 3-(2-PROPY L)-7-[3,4-DIMETHOXYBENZYL)-3,7-DIAZABICY CLO[3.3.1]NONAN-9,9-DIOL HYDROBROMIDE, AND 3,7-DIISOPROPYL-3,7-DIAZABICY CLO[3.3.1]NONAN-9,9-DIOL DIHYDROCHLORIDE

Tyagi, Sameer, Berlin, K. Darrell, Hossain, M. Bilayet, Sinars, Cindy, Van Der Helm, Dick, Sangiah, Subbiah

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

1997

Language:

english

File:

PDF, 996 KB

english, 1997

52

A variation of the square-pyramidal copper(II) surrounding. A possible copper interaction with tyrosine

Van der Helm, Dick., Franks, W. A.

Journal:

Journal of the American Chemical Society

Year:

1968

Language:

english

File:

PDF, 361 KB

english, 1968

53

Structure of nepetalic acid in the solid state and in solution by x-ray diffraction and nuclear magnetic resonance analysis

Eisenbraun, Edmund J., Browne, Clinton E., Eliel, Ernest L., Harris, David L., Rahman, Asadur, Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 549 KB

english, 1981

54

Crystal Structure and Conformational Studies of the Ferric Hexadentate N,N,N-Tris[2-(3-hydroxy-2-oxo-1,2-dihydropyridin-1-yl)acetamido]ethylamine Complex (FeCP130) as a Specific Iron(III) Chelator

Xiao, Gaoyi, van der Helm, Dick, Hider, Robert C., Dobbin, Paul S.

Journal:

Inorganic Chemistry

Year:

1995

Language:

english

File:

PDF, 300 KB

english, 1995

55

Marine natural products. Dactylyne, an acetylenic dibromochloro ether from the sea hare Aplysia dactylomela

McDonald, Francis J., Campbell, David C., Vanderah, David J., Schmitz, Francis J., Washecheck, D. M., Burks, John E., Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1975

Language:

english

File:

PDF, 225 KB

english, 1975

56

Marine natural products: halogenated acetylenic ethers from the sea hare Aplysia dactylomela

Gopichand, Yalamanchili, Schmitz, Francis J., Shelley, Javan, Rahman, Asadur, Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 824 KB

english, 1981

57

Synthesis, physicochemical properties, and biological evaluation of N-substituted 2-alkyl-3-hydroxy-4(1H)-pyridinones: orally active iron chelators with clinical potential

Dobbin, Paul S., Hider, Robert C., Hall, Adrian D., Taylor, Paul D., Sarpong, Patience, Porter, John B., Xiao, Gaoyi, van der Helm, Dick

Journal:

Journal of Medicinal Chemistry

Year:

1993

Language:

english

File:

PDF, 1.31 MB

english, 1993

58

Carbon-phosphorus heterocycles. Conformational analysis of substituted 1-phenyl-4-phosphorinanones and derivatives. Single-crystal x-ray diffraction analysis of 1-r,cis-2a,trans-6e-triphenyl-4-phosphorinanone 1-sulfide

Rampal, Jang B., Macdonell, Gary D., Edasery, James P., Berlin, K. Darrell, Rahman, Asadur, Van der Helm, Dick, Pietrusiewicz, K. Michal

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 1.36 MB

english, 1981

59

Novel heteroarotinoids: synthesis and biological activity

Spruce, Lyle W., Gale, Jonathan B., Berlin, K. Darrell, Verma, A. K., Breitman, Theodore R., Ji, Xinhua, Van der Helm, Dick

Journal:

Journal of Medicinal Chemistry

Year:

1991

Language:

english

File:

PDF, 1.52 MB

english, 1991

60

Structure and Absolute Stereochemistry of Salvimirzacolide, a New Sesterterpene from Salvia mirzayanii

Moghaddam, Firoz Matloubi, Amiri, Raheba, Alam, Maktoob, Hossain, M. Bilayet, van der Helm, Dick

Journal:

Journal of Natural Products

Year:

1998

Language:

english

File:

PDF, 79 KB

english, 1998

61

Diterpenoids from the gorgonian Solenopodium stechei

Bloor, Stephen J., Schmitz, Francis J., Hossain, M. Bilayet, Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1992

Language:

english

File:

PDF, 1.35 MB

english, 1992

62

Arenarol and arenarone: sesquiterpenoids with rearranged drimane skeletons from the marine sponge Dysidea arenaria

Schmitz, Francis J., Lakshmi, Vijai, Powell, Douglas R., Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1984

Language:

english

File:

PDF, 948 KB

english, 1984

63

SYNTHESIS AND SINGLE CRYSTAL X-RAY DIFFRACTION CHARACTERIZATION OF [2-AMINO-N-(2,6-DIMETHYLPHENYL)-ACETAMIDATO-N 2 ] DICHLOROETHYLSELENIUM, A SELENIUM-CONTAINING LIDOCAINE MIMIC

Thompson, M. Daniel, Berlin, K. Darrell, Smith, Gary S., van der Helm, Dick, Muchmore, Steve W., Fidelis, Krzysztof A.

Journal:

Organic Preparations and Procedures International

Year:

1986

Language:

english

File:

PDF, 385 KB

english, 1986

64

Synthesis and stereochemistry of thiaspiro-.alpha.-methylene-.gamma.-butyrolactones. Single-crystal x-ray diffraction analysis of 2,2,6,6-tetramethyl-9-methylene-7-oxa-1-thiaspiro[4.5]decan-8-one

Pantaleo, Nantelle S., Satyamurthy, Nagichettiar, Ramarajan, Krishnasamy, O'Donnell, Daniel J., Berlin, K. Darrell, Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 923 KB

english, 1981

65

THE MANNICH CONDENSATION WITH 1-HETERA-4-CYCLOHEXANONES. THE NOVEL FORMATION OF 7-BENZYL-3-HETERA-7-AZABICYCLO[3.3.1]NONAN-9-ONES, 3,6-DIBENZYL-HEXAHYDRO-8a-METHOXY 5H -4a,8-(METHANO-HETERAMETHANO)- 2H -PYRIDO[3,4- e ]-1,3-OXAZINES, AND 2,4,10,12-TETRABENZYL-2,4,10,12-TETRAAZA-15-HETERADISPIRO[5.1.5.3]HEXADECAN-7-ONES. SINGLE CRYSTAL X-RAY DIFFRACTION ANALYSES OF 3,6-DIBENZYLHEXAHYDRO-8a-METHOXY- 5H -4a,8-(METHANOTHIOMETHANO)-2 H -PYRIDO[3,4- e ]-1,3-OXAZINE AND 2,4,10,12-TETRABENZYL-2,4,10,12-TETRAAZA-15-THIADISPIRO[5.1.5.3]HEXADECAN

Smith, Gary S., Berlin, K. Darrell, Zisman, Stan A., Holt, Elizabeth M., Green, Vicki A., Van Der Helm, Dick

Journal:

Phosphorous and Sulfur and the Related Elements

Year:

1988

Language:

english

File:

PDF, 1.24 MB

english, 1988

66

Structure of des(diserylglycyl)ferrirhodin, DDF, a novel siderophore from Aspergillus ochraceous

Jalal, Mahbubul A. F., Galles, Jeffrey L., Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1985

Language:

english

File:

PDF, 552 KB

english, 1985

67

The sesquiterpene hydrocarbons of the gorgonian, Pseudopterogorgia americana, the nonisoprenoid ?-gorgonene.

Weinheimer, Alfred J., Washecheck, Paul H., van der Helm, Dick, Hossain, M. Bilayet

Journal:

Chemical Communications (London)

Year:

1968

Language:

english

File:

PDF, 167 KB

english, 1968

68

Structure of ferric pseudobactin: a siderophore from a plant growth promoting Pseudomonas

Teintze, Martin, Hossain, M. B., Barnes, C. L., Leong, John, Van der Helm, Dick

Journal:

Year:

1981

Language:

english

File:

PDF, 1.52 MB

english, 1981

69

Makaluvic Acids A and B: Novel Alkaloids from the Marine Sponge Zyzzya fuliginosus

Fu, Xiong, Ng, Pei-Ling, Schmitz, Francis J., Hossain, M. Bilayet, van der Helm, Dick, Kelly-Borges, Michelle

Journal:

Journal of Natural Products

Year:

1996

Language:

english

File:

PDF, 149 KB

english, 1996

70

Synthesis of tetracyclo[6.3.0.04,11.05,9]undeca-2,6-diene, 10-oxatetracyclo[6.3.0.04,11.05,9]undeca-2,6-diene, and hexacyclo[5.4.0.02,6.04,11.05,9.08,10]undecane. Structure of syn-4, syn-7-diiodopentacyclo[6.3.0.02,6.03,10.05,9]undecane. Synthesis and rhodium(I)-promoted rearrangement

Marchand, Alan P., Chou, Teh-Chang., Ekstrand, James D., Van der Helm, Dick.

Journal:

Journal of Organic Chemistry

Year:

1976

Language:

english

File:

PDF, 1000 KB

english, 1976

71

Preparation and stereochemistry of some substituted 4-thianones and 4-thianols. Single-crystal analysis of (R)-2,trans-6-diphenyl-cis-3-methyl-4-thianone and (R)-2,trans-6-diphenyl-cis-3-ethyl-4-thianone

Ramalingam, K., Berlin, K. D., Loghry, R. A., Van der Helm, Dick, Satyamurthy, N.

Journal:

Journal of Organic Chemistry

Year:

1979

Language:

english

File:

PDF, 1.21 MB

english, 1979

72

The Absolute Configuration of Naturally Occurring Isocitric Acid

Patterson, A. L., Johnson, Carroll K., van der Helm, Dick., Minkin, Jean A.

Journal:

Journal of the American Chemical Society

Year:

1962

Language:

english

File:

PDF, 272 KB

english, 1962

73

Carbon-phosphorus heterocycles. Synthesis of phosphorus-containing cannabinoid precursors and a single-crystal analysis of 1,2,3,4-tetrahydro-10-hydroxy-8-n-pentyl-5H-phosphorino[3,4-c][1]benzopyran-5-one 3-oxide

Rampal, Jang. B., Berlin, K. Darrell, Pantaleo, Nantelle S., McGuffy, Ann, Van der Helm, Dick

Journal:

Journal of the American Chemical Society

Year:

1981

Language:

english

File:

PDF, 629 KB

english, 1981

74

Structure and conformation of roseotoxin B

Springer, James P., Cole, Richard J., Dorner, Joe W., Cox, Richard H., Richard, John L., Barnes, Charles L., Van der Helm, Dick

Journal:

Journal of the American Chemical Society

Year:

1984

Language:

english

File:

PDF, 674 KB

english, 1984

75

Sodium-ethylenediamine reductive dimerization of naphthalene to 5,6,7,12,13,14-hexahydro-5,13:6,12-dimethanodibenzo[a,f]cyclodecene

Eisenbraun, E. J., Ansell, L. L., Dobbs, T. K., Harris, L. E., Hertzler, D. V., Ruehle, P. H., Burks, John E., Van der Helm, Dick.

Journal:

Journal of Organic Chemistry

Year:

1976

Language:

english

File:

PDF, 562 KB

english, 1976

76

Organometallic compounds of the lanthanides. 64. Synthesis and x-ray crystal structures of dimethylgermyl bis(tetramethylcyclopentadienyl) halide and alkyl derivatives of the lanthanides

Schumann, Herbert., Esser, Lothar., Loebel, Joerg., Dietrich, Andreas., Van der Helm, Dick., Ji, Xinhua.

Journal:

Organometallics

Year:

1991

Language:

english

File:

PDF, 1.00 MB

english, 1991

77

Cercospora beticola phytotoxins: cebetins that are photoactive, magnesium ion-binding, chlorinated anthraquinone-xanthone conjugates

Jalal, Mahbubul A. F., Hossain, M. Bilayet, Robeson, David J., Van der Helm, Dick

Journal:

Journal of the American Chemical Society

Year:

1992

Language:

english

File:

PDF, 645 KB

english, 1992

78

Synthesis and antiarrhythmic properties of novel 3-selena-7-azabicyclo[3.3.1]nonanes and derivatives. Single-crystal x-ray diffraction analysis of 7-benzyl-3-selena-7-azabicyclo[3.3.1]nonan-9-one and 7-benzyl-3-selena-7-azabicyclo[3.3.1]nonane hydroperchlorate

Thompson, M. Daniel, Smith, Gary S., Berlin, K. Darrell, Holt, Elizabeth M., Scherlag, Benjamin J., Van der Helm, Dick, Muchmore, Steven W., Fidelis, Krzysztof A.

Journal:

Journal of Medicinal Chemistry

Year:

1987

Language:

english

File:

PDF, 1.26 MB

english, 1987

79

Synthesis of bridging vinylideneiron dimers using 1,1-dichlorocyclopropanes. Cyclopropenes as intermediates

Marten, David F., Dehmlow, Eckehard V., Hanlon, David J., Hossain, M. Bilayet, Van der Helm, Dick

Journal:

Journal of the American Chemical Society

Year:

1981

Language:

english

File:

PDF, 293 KB

english, 1981

80

Additions and Corrections - Carbon-Phosphorous Heterocycles. Synthesis of Phosphorus-Containing Cannabinoid Precursors and a Single-Crystal Analysis of 1,2,3,4-Tetrahydro-10-hydroxy-8-n-pentyl-5H-phosphorino-[3,4-c[1])benzopyran-5-one-3-Oxide

Rampal, Jang, Berlin, K., Pantales, Nantelle, McGuffy, Ann, Van Der Helm, Dick

Journal:

Journal of the American Chemical Society

Year:

1981

Language:

english

File:

PDF, 137 KB

english, 1981

81

Crystal and molecular structures of two molybdenum complexes with tetraphenylborate as a .pi.-bonding ligand: (I) cycloheptatrienyl(tetraphenylborato)molybdenum and (II) tetraethylammonium tricarbonyl(tetraphenylborato)molybdenum

Hossain, M. Bilayet, Van der Helm, Dick

Journal:

Inorganic Chemistry

Year:

1978

Language:

english

File:

PDF, 1.03 MB

english, 1978

82

Crystal structure of ferrichrome and a comparison with the structure of ferrichrome A

Van der Helm, Dick, Baker, J. R., Eng-Wilmot, D. L., Hossain, M. B., Loghry, R. A.

Journal:

Journal of the American Chemical Society

Year:

1980

Language:

english

File:

PDF, 943 KB

english, 1980

83

Organometallic compounds of the lanthanides. 36. Bis(pentamethylcyclopentadienyl) halide and alkyl derivatives of the lanthanides

Schumann, Herbert., Albrecht, Ilse., Loebel, Joerg., Hahn, Ekkehardt., Hossain, M. Bilayet., Van der Helm, Dick.

Journal:

Organometallics

Year:

1986

Language:

english

File:

PDF, 1.15 MB

english, 1986

84

Amine-sulfur dioxide complexes. Structure of N,N,N',N'-tetramethyl-p-phenylenediamine-bis(sulfur dioxide)

Childs, Jerry D., Van der Helm, Dick., Christian, S. D.

Journal:

Inorganic Chemistry

Year:

1975

Language:

english

File:

PDF, 766 KB

english, 1975

85

Additions and Corrections - Synthesis and Stereochemistry of Thiaspiro-α-methylene-γ-butyrolactones. Single-Crystal X-ray Diffraction Analysis of 2,2,6,6-Tetramethyl-9-methylene-7-oxa-1-thiaspiro[4,5]decan-8-one.

Pantelo, Nantelle, Satyamurthy, Nagichettiar, Ramarajan, Krishnasamy, O'Donnell, Daniel, Berlin, K., van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1982

Language:

english

File:

PDF, 128 KB

english, 1982

86

Synthesis of methyl- and nitro-substituted pentacyclo[5.4.0.02,6.03,10.05,9]undecane-8,11-diones

Marchand, Alan P., Suri, Suresh Chander, Earlywine, Arthur D., Powell, Douglas R., Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1984

Language:

english

File:

PDF, 1.37 MB

english, 1984

87

Cyclic peptides from the ascidian Lissoclinum patella: conformational analysis of patellamide D by x-ray analysis and molecular modeling

Schmitz, Francis J., Ksebati, Mohamad B., Chang, James S., Wang, J. L., Hossain, M. Bilayet, Van der Helm, Dick, Engel, Michael H., Serban, Andrei, Silfer, Jeff A.

Journal:

Journal of Organic Chemistry

Year:

1989

Language:

english

File:

PDF, 1.48 MB

english, 1989

88

1,5-Dimethyl-2,4,6,8-semibullvalenetetracarboxylic Dianhydride: A Close Approach to a Neutral Homoaromatic Semibullvalene

Williams, Richard Vaughan, Gadgil, Vijay R., Chauhan, Kamlesh, van der Helm, Dick, Hossain, M. Bilayet, Jackman, Lloyd M., Fernandes, Errol

Journal:

Journal of the American Chemical Society

Year:

1996

Language:

english

File:

PDF, 143 KB

english, 1996

89

Kinetics of acetylation of substituted 4-thianols. Single-crystal analysis of cis-2, trans-6-diphenyl-cis-3-ethylthian-r-4-ol and 2,2,6,6-tetramethyl-4(e)-phenylthian-4(a)-ol.

Satyamurthy, N., Sivakumar, R., Ramalingam, K., Berlin, K. Darrell, Loghry, R. A., Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1980

Language:

english

File:

PDF, 935 KB

english, 1980

90

Organometallic compounds of the lanthanides. 22. (Tetramethylethylenediamine)lithium dimethyl derivatives of erbium and lutetium

Schumann, Herbert., Lauke, Harald., Hahn, Ekkehardt., Heeg, Mary Jane., Van der Helm, Dick.

Journal:

Organometallics

Year:

1985

Language:

english

File:

PDF, 546 KB

english, 1985

91

Correction. Syntheses and a Conformational Study of Certain Selected 3-Oxa-7-azabicyclo[3.3.1]nonan-9-ones. Singl-Crystal X-ray Diffraction Analysis of 6,8-Bis(2-chlorophenyl)-2-oxa-azabicyclo[3.3.1]nonan-9-one

Arjunan, Palanisamy, Berlin, Kenneth Darrell, Barnes, Charles, van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 135 KB

english, 1981

92

Synthesis, structure, and reactivity of tricarbonyl(.eta.5-cyclopentadienyl)(.eta.1-dimethylcarbamodithioato)tungsten

Abrahamson, Harmon B., Freeman, Michael L., Hossain, M. Bilayet, Van der Helm, Dick

Journal:

Inorganic Chemistry

Year:

1984

Language:

english

File:

PDF, 1.06 MB

english, 1984

93

Carbon-phosphorus heterocycles. Synthesis and conformational analysis of alkyl-substituted 1,2,6-triphenyl-4-phosphorinanones and derivatives

Rampal, Jang B., Berlin, K. Darrell, Edasery, James P., Satyamurthy, N., Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 993 KB

english, 1981

94

The Crystal structure of ferrioxamine E

Van der Helm, Dick, Poling, M.

Journal:

Journal of the American Chemical Society

Year:

1976

Language:

english

File:

PDF, 587 KB

english, 1976

95

Crystal structure of .beta.-gorgonene-silver nitrate

Hossain, M. Bilayet., Van der Helm, Dick.

Journal:

Journal of the American Chemical Society

Year:

1968

Language:

english

File:

PDF, 556 KB

english, 1968

96

Tedanolide: a potent cytotoxic macrolide from the Caribbean sponge Tedania ignis

Schmitz, Francis J., Gunasekera, Sarath P., Yalamanchili, Gopichand, Hossain, M. Bilayet, Van der Helm, Dick

Journal:

Journal of the American Chemical Society

Year:

1984

Language:

english

File:

PDF, 310 KB

english, 1984

97

Longithorones, Unique Prenylated Para- and Metacyclophane Type Quinones from the Tunicate Aplidium longithorax

Fu, Xiong, Hossain, M. Bilayet, Schmitz, Francis J., van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1997

Language:

english

File:

PDF, 299 KB

english, 1997

98

Additions and Corrections - Carbon-Phosphorus Heterocycles. Synthesis of Phosphorus-Containing Cannabinoid Precursors and a Single-Crystal Analysis of 1,2,3,4-Tetrahydro-10-hydroxy-8-n-pentyl-5H-phosphorus-[3,4-c[Ibenzopyran-5-one-3-Oxide]]

Rampal, Jang, Berlin, K., Pantaleo, Nantelle, McGuffy, Ann, van der Helm, Dick

Journal:

Journal of the American Chemical Society

Year:

1981

Language:

english

File:

PDF, 126 KB

english, 1981

99

Carbon-carbon reductive cleavage during metal-ammonia reaction

Ruehle, P. H., Dobbs, T. K., Ansell, L. L., Van der Helm, Dick, Eisenbraun, E. J.

Journal:

Journal of Organic Chemistry

Year:

1977

Language:

english

File:

PDF, 285 KB

english, 1977

100

Syntheses and a conformational study of certain selected 3-oxa-7-azabicyclo[3.3.1]nonan-9-ones. Single crystal x-ray diffraction analysis of 6,8-bis(2-chlorophenyl)-3-oxa-7-azabicyclo[3.3.1]nonan-9-one

Arjunan, Palanisamy, Berlin, K. Darrell, Barnes, Charles L., Van der Helm, Dick

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 1.21 MB

english, 1981