The present invention provides methods of forming hydrogen sulfide. The methods include contacting a precursor compound with an unmasking agent; wherein the precursor compound comprises a hydrogen sulfide releasing moiety and a masked nucleophile; and wherein the contacting is conducted under conditions sufficient for cyclization of the precursor compound via lactone or lactam formation; thereby releasing hydrogen sulfide from the precursor compound. Hydrogen sulfide precursor compounds according to Formula I are also described, as well as methods for treating diseases and conditions using hydrogen sulfide precursors. ##STR00001##

A method of producing a pentafluorosulfanyl aromatic compound is provided. A method of producing a pentafluorosulfanyl aromatic compound represented by general formula (3):

Ar(SF.sub.5).sub.k(3) where Ar is a substituted or an unsubstituted aryl group or heteroaryl group, and k is an integer of 1 to 3; the method includes reacting IF.sub.5 with a halotetrafluorosulfanyl aromatic compound represented by general formula (2):

Ar(SF.sub.4Hal).sub.k(2) where Ar and k are defined as above; and Hal is a Cl group, a Br group, or an I group.

A method of producing a pentafluorosulfanyl aromatic compound is provided. A method of producing a pentafluorosulfanyl aromatic compound represented by general formula (3):

Ar(SF.sub.5).sub.k(3) where Ar is a substituted or an unsubstituted aryl group or heteroaryl group, and k is an integer of 1 to 3; the method includes reacting IF.sub.5 with a halotetrafluorosulfanyl aromatic compound represented by general formula (2):

Ar(SF.sub.4Hal).sub.k(2) where Ar and k are defined as above; and Hal is a Cl group, a Br group, or an I group.

Shown is a bimesogenic compound having high solubility in a liquid crystal compound, a liquid crystal composition, a chiral dopant, an additive including an antioxidant or an ultraviolet light absorber, and a polymerizable liquid crystal compound, each of which is used in other bimesogenic compounds or a liquid crystal display device, while maintaining desired physical properties. A compound is represented by formula (1), a liquid crystal composition contains the compound, conjugate fibers with an encapsulated liquid crystal obtained from the liquid crystal composition, and a liquid crystal display device is obtained from the conjugate fibers with the encapsulated liquid crystal.
MG.sup.1-Z.sup.a-Sp-Z.sup.b-MG.sup.2(1)

Shown is a bimesogenic compound having high solubility in a liquid crystal compound, a liquid crystal composition, a chiral dopant, an additive including an antioxidant or an ultraviolet light absorber, and a polymerizable liquid crystal compound, each of which is used in other bimesogenic compounds or a liquid crystal display device, while maintaining desired physical properties. A compound is represented by formula (1), a liquid crystal composition contains the compound, conjugate fibers with an encapsulated liquid crystal obtained from the liquid crystal composition, and a liquid crystal display device is obtained from the conjugate fibers with the encapsulated liquid crystal.
MG.sup.1-Z.sup.a-Sp-Z.sup.b-MG.sup.2(1)

A compound, or pharmaceutically acceptable salt thereof, having a formula I of: ##STR00001## wherein R.sup.1 is H or optionally-substituted alkyl; R.sup.2 is optionally-substituted alkyl; R.sup.3 and R.sup.4 are each independently H or optionally-substituted alkyl; R.sup.5 is H, optionally-substituted alkyl, acyl, or alkoxycarbonyl; R.sup.6 and R.sup.7 are each independently H, deuterium, optionally-substituted alkyl, or R.sup.6 and R.sup.7 together form a carbocyclic; R.sup.8 is optionally-substituted thiazolyl, optionally-substituted thiophenyl, or substituted phenyl, provided that if R.sup.8 is 4-halophenyl, then R.sup.2 is substituted alkyl or branched alkyl or at least one of R.sup.6 or R.sup.7 is not H; and R.sup.30, R.sup.31 and R.sup.32 are each independently H, deuterium, halogen, substituted sulfanyl, or optionally-substituted alkoxy.

A hydropersulfide precursor compound having the formula (I): formula (I) as defined in the specification. A process for preparing the hydropersulfide precursor, and a method of using the precursor to generate hydropersulfide are also described. ##STR00001##

This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (Formula One). ##STR00001##

This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (Formula One). ##STR00001##

There is disclosed a mutant, non-naturally occurring or transgenic plant cell comprising: (i) a polynucleotide comprising, consisting or consisting essentially of a sequence encoding a threonine synthase and having at least 90% sequence identity to SEQ ID NO:1, SEQ ID NO:2 or SEQ ID NO:3 or at least 87% sequence identity to SEQ ID NO:4, or SEQ ID NO:5; (ii) a polypeptide encoded by any one of said polynucleotides set forth in (i); or (iii) a polypeptide having at least 95% sequence identity to SEQ ID NO:6, SEQ ID NO:7 or SEQ ID NO:8; or (iv) a construct, vector or expression vector comprising the polynucleotide as set forth in (i).